Section

[Code of Federal Regulations]
[Title 49, Volume 6]
[Revised as of October 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR571.110]

[Page 365-370]

TITLE 49--TRANSPORTATION

CHAPTER V--NATIONAL HIGHWAY TRAFFIC
SAFETY ADMINISTRATION, DEPARTMENT
OF TRANSPORTATION

PART 571_FEDERAL MOTOR VEHICLE SAFETY STANDARDS--Table of Contents

Subpart B_Federal Motor Vehicle Safety Standards

Sec. 571.110 Standard No. 110; Tire selection and rims for motor vehicles
with a GVWR of 4,536 kilograms (10,000 pounds) or less.

S1. Purpose and scope. This standard specifies requirements for tire
selection to prevent tire overloading.
S2 Application. This standard applies to motor vehicles with a gross
vehicle weight rating (GVWR) of 10,000 pounds or less, except for
motorcycles, and to non-pneumatic spare tire assemblies for use on those
vehicles.
S3. Definitions.
Accessory weight means the combined weight (in excess of those
standard items which may be replaced) of automatic transmission, power
steering, power brakes, power windows, power seats, radio, and heater,
to the extent that these items are available as factory-installed
equipment (whether installed or not).
Curb weight means the weight of a motor vehicle with standard
equipment including the maximum capacity of fuel, oil, and coolant, and,
if so equipped, air conditioning and additional weight optional engine.
Maximum loaded vehicle weight means the sum of--
(a) Curb weight;
(b) Accessory weight;
(c) Vehicle capacity weight; and
(d) Production options weight.
Non-pneumatic rim is used as defined in Sec. 571.129.
Non-pneumatic spare tire assembly means a non-pneumatic tire
assembly intended for temporary use in place of one of the pneumatic
tires and rims that are fitted to a passenger car in compliance with the
requirements of this standard.
Non-pneumatic tire and non-pneumatic tire assembly are used as
defined in Sec. 571.129.
Normal occupant weight means 68 kilograms times the number of
occupants specified in the second column of Table I.
Occupant distribution means distribution of occupants in a vehicle
as specified in the third column of Table I.
Production options weight means the combined weight of those
installed regular production options weighing over 2.3 kilograms in
excess of those standard items which they replace, not previously
considered in curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim.
Rim is used as defined in Sec. 571.109.
Vehicle capacity weight means the rated cargo and luggage load plus
68 kilograms times the vehicle's designated seating capacity.
Vehicle maximum load on the tire means that load on an individual
tire that is determined by distributing to each axle its share of the
maximum loaded vehicle weight and dividing by two.
Vehicle normal load on the tire means that load on an individual
tire that is determined by distributing to each axle its share of the
curb weight, accessory weight, and normal occupant weight (distributed
in accordance with Table I) and dividing by 2.
Wheel center member is used as defined in Sec. 571.129.
S4. Requirements.
S4.1 General. (a) Passenger cars shall be equipped with tires that
meet the requirements of Sec. 571.109, New Pneumatic Tires, except that
passenger cars may be equipped with a non-pneumatic spare tire assembly
that complies with

[[Page 366]]

Sec. 571.129, New Non-Pneumatic Tires for Passenger Cars and S6 and S8
of this standard.
(b) Passenger cars and non-pneumatic spare tires assemblies for use
on passenger cars shall comply with S4 through S8 of this standard.
(c) Motor vehicles with a gross vehicle weight rating (GVWR) or
10,000 pounds or less, except for passenger cars, and the non-pneumatic
spare tire assemblies for use on those vehicles shall comply with S4.3,
S4.3.1, S4.3.2, S4.3.3, S4.3.4, and S7.2(a) of this standard.
S4.2 Tire load limits.
S4.2.1 The vehicle maximum load on the tire shall not be greater
than the applicable maximum load rating as marked on the sidewall of the
tire.
S4.2.2 The vehicle normal load on the tire shall not be greater than
the test load used in the high speed performance test specified in S5.5
of Sec. 571.109 for that tire.
S4.3 Placard. Each vehicle, except for a trailer or incomplete
vehicle, shall show the information specified in S4.3 (a) through (g),
and may show, at the manufacturer's option, the information specified in
S4.3 (h) and (i), on a placard permanently affixed to the driver's side
B-pillar. In each vehicle without a driver's side B-pillar and with two
doors on the driver's side of the vehicle opening in opposite
directions, the placard shall be affixed on the forward edge of the rear
side door. If the above locations do not permit the affixing of a
placard that is legible, visible and prominent, the placard shall be
permanently affixed to the rear edge of the driver's side door. If this
location does not permit the affixing of a placard that is legible,
visible and prominent, the placard shall be affixed to the inward facing
surface of the vehicle next to the driver's seating position. This
information shall be in the English language and conform in color and
format, not including the border surrounding the entire placard, as
shown in the example set forth in Figure 1 in this standard. At the
manufacturer's option, the information specified in S4.3 (c), (d), and,
as appropriate, (h) and (i) may be shown, alternatively to being shown
on the placard, on a tire inflation pressure label which must conform in
color and format, not including the border surrounding the entire label,
as shown in the example set forth in Figure 2 in this standard. The
label shall be permanently affixed and proximate to the placard required
by this paragraph. The information specified in S4.3 (e) shall be shown
on both the vehicle placard and on the tire inflation pressure label (if
such a label is affixed to provide the information specified in S4.3
(c), (d), and, as appropriate, (h) and (i)) may be shown in the format
and color scheme set forth in Figures 1 and 2.
(a) Vehicle capacity weight expressed as ``The combined weight of
occupants and cargo should never exceed XXX kilograms or XXX pounds'';
(b) Designated seated capacity (expressed in terms of total number
of occupants and number of occupants for each front and rear seat
location);
(c) Vehicle manufacturer's recommended cold tire inflation pressure
for front, rear and spare tires, subject to the limitations of S4.3.4.
For full size spare tires, the statement ``see above'' may, at the
manufacturer's option replace manufacturer's recommended cold tire
inflation pressure. If no spare tire is provided, the word ``none'' must
replace the manufacturer's recommended cold tire inflation pressure.
(d) Tire size designation, indicated by the headings ``size'' or
``original tire size'' or ``original size,'' and ``spare tire'' or
``spare,'' for the tires installed at the time of the first purchase for
purposes other than resale. For full size spare tires, the statement
``see above'' may, at the manufacturer's option replace the tire size
designation. If no spare tire is provided, the word ``none'' must
replace the tire size designation;
(e) On the vehicle placard, ``Tire and Loading Information and, on
the tire inflation pressure label, ``Tire Information'';
(f) ``See Owner's Manual for Additional Information'';
(g) For a vehicle equipped with a non-pneumatic spare tire assembly,
the tire identification code with which that assembly is labeled
pursuant to the requirements of S4.3(a) of 571.129, New

[[Page 367]]

Non-Pneumatic Tires for Passenger Cars;
(h) At the manufacturer's option, identifying information provided
in any alphanumeric and or barcode form, located vertically, along the
right edge or the left edge of the placard or the label, or
horizontally, along the bottom edge of the placard or the label; and
(i) At the manufacturer's option, the load range identification
symbol, load index, and speed rating, located immediately to the right
of the tire size designation listed in accordance with S4.3(d) above.
S4.3.1 Requirements for vehicles manufactured in two or more stages.
A placard or placard and label shall be affixed to the completed vehicle
by the final-stage manufacturer in accordance with S4.3 and with the
vehicle capacity weight and seating designations as finally
manufactured.
S4.3.2 Requirements for altered vehicles. A new placard or placard
and label shall be affixed, so as to obscure the original placard, to an
altered vehicle that has previously been certified in accordance with
Sec. 567.4 or Sec. 567.5, other than by the addition, substitution, or
removal of readily attachable components such as mirrors or tire and rim
assemblies, or minor finishing operations such as painting, or who
alters the vehicle in such a manner that its stated weight ratings are
not longer valid, before the first purchase of the vehicle in good faith
for purposes other than resale, containing accurate information for the
altered vehicle, in accordance with S4.3.
S4.3.3 Additional labeling information for vehicles other than
passenger cars. Each vehicle shall show the size designation and, if
applicable, the type designation of rims (not necessarily those on the
vehicle) appropriate for the tire appropriate for use on that vehicle,
including the tire installed as original equipment on the vehicle by the
vehicle manufacturer, after each GAWR listed on the certification label
required by Sec. 567.4 or Sec. 567.5 of this chapter. This information
shall be in the English language, lettered in block capitals and
numerals not less than 2.4 millimeters high and in the following format:

Truck Example--Suitable Tire-Rim Choice

GVWR: 2,441 kilograms (5381 pounds).
GAWR: Front--1,299 kilograms (2,864 pounds) with P265/70R16 tires,
16 x 8.0 rims at 248 kPa (36 psi) cold single.
GAWR: Rear--1,299 kilograms (2,864 pounds) with P265/70R16 tires, 16
x 8.00 rims, at 248 kPa (36 psi) cold single.

S4.3.4 No inflation pressure other than the maximum permissible
inflation pressure may be shown on the placard and, if any, tire
inflation pressure label unless--
(a) It is less than the maximum permissible inflation pressure;
(b) It is appropriate for the load limits as calculated in
accordance with S4.2; and
(c) The tire load rating specified in a submission by an individual
manufacturer, pursuant to S4.1.1(a) of Sec. 571.139 or contained in one
of the publications described in S4.1.1(b) of Sec. 571.139, for the
tire size at that inflation pressure is not less than the vehicle
maximum load and the vehicle normal load on the tire for those vehicle
loading conditions.
S4.3.5 Requirements for trailers. Each trailer, except for an
incomplete vehicle, must show the information specified in S4.3 (c)
through (g), and may show the information specified in S4.3 (h) and (i),
on a placard permanently affixed proximate to the certification label
specified in 49 CFR part 567. Additionally, each trailer must on its
placard contain a cargo capacity statement expressed as ``The weight of
cargo should never exceed XXX kilograms or XXX pounds'' in the same
location on the placard specified for the ``vehicle capacity weight''
statement required by this standard. At the manufacturer's option, the
information specified in S4.3 (c), (d), (h) and (i) may be shown,
alternatively, on a tire inflation pressure label, and conform in color
and format, not including the border surrounding the entire label, as
specified in the example set forth in Figure 2 in this standard. The
label shall be permanently affixed and proximate to the placard required
by this paragraph. The information specified in S4.3 (e) shall be shown
on both the

[[Page 368]]

vehicle placard and on the tire inflation pressure label (if such a
label is affixed to provide the information specified in S4.3 (c), (d),
(h) and (i)) in the format and color scheme set forth in Figures 1 and
2.
S4.4 Rims.
S4.4.1 Requirements. Each rim shall:
(a) Be constructed to the dimensions of a rim that is listed
pursuant to the definition of test rim in paragraph S3. of Sec. 571.109
(Standard No. 109) for use with the tire size designation with which the
vehicle is equipped.
(b) In the event of rapid loss of inflation pressure with the
vehicle traveling in a straight line at a speed of 97 kilometers per
hour, retain the deflated tire until the vehicle can be stopped with a
controlled braking application.

Table I--Occupant Loading and Distribution for Vehicle Normal Load for
Various Designated Seating Capacities
------------------------------------------------------------------------
Vehicle
normal
Designated seating capacity, load, Occupant distribution in a
number of occupants number of normally loaded vehicle
occupants
------------------------------------------------------------------------
2 through 4 2 2 in front.
5 through 10 3 2 in front, 1 in second seat.
------------------------------------------------------------------------

S5. Load Limits for Non-Pneumatic Spare Tires. The highest vehicle
maximum load on the tire for the vehicle shall not be greater than the
load rating for the non-pneumatic spare tire.
S6 Labeling Requirements for Non-Pneumatic Spare Tires or Tire
Assemblies. Each non-pneumatic tire or, in the case of a non-pneumatic
tire assembly in which the non-pneumatic tire is an integral part of the
assembly, each non-pneumatic tire assembly shall include, in letters or
numerals not less than 4 millimeters high, the information specified in
paragraphs S6 (a) and (b). The information shall be permanently molded,
stamped, or otherwise permanently marked into or onto the non-pneumatic
tire or non-pneumatic tire assembly, or shall appear on a label that is
permanently attached to the tire or tire assembly. If a label is used,
it shall be subsurface printed, made of material that is resistant to
fade, heat, moisture and abrasion, and attached in such a manner that it
cannot be removed without destroying or defacing the label on the non-
pneumatic tire or tire assembly. The information specified in paragraphs
S6 (a) and (b) shall appear on both sides of the non-pneumatic tire or
tire assembly, except, in the case of a non-pneumatic tire assembly
which has a particular side that must always face outward when mounted
on a vehicle, in which case the information specified in paragraphs S6
(a) and (b) shall only be required on the outward facing side. The
information shall be positioned on the tire or tire assembly such that
it is not placed on the tread or the outermost edge of the tire and is
not obstructed by any portion of any non-pneumatic rim or wheel center
member designated for use with that tire in this standard or in Standard
No. 129.
(a) FOR TEMPORARY USE ONLY; and
(b) MAXIMUM 80 KM/H (50 M.P.H.).
S7. Requirements for Passenger Cars Equipped with Non-Pneumatic
Spare Tire Assemblies
S7.1 Vehicle Placarding Requirements. A placard, permanently affixed
to the inside of the vehicle trunk or an equally accessible location
adjacent to the non-pneumatic spare tire assembly, shall display the
information set forth in S6 in block capitals and numerals not less than
6 millimeters high preceded by the words ``IMPORTANT--USE OF SPARE
TIRE'' in letters not less than 9 millimeters high.
S7.2 Supplementary Information. The owner's manual of the passenger
car shall contain, in writing in the English language and in not less
than 10 point type, the following information under the heading
``IMPORTANT--USE OF SPARE TIRE'':
(a) A statement indicating the information related to appropriate
use for the non-pneumatic spare tire including at a minimum the
information set forth in S6 (a) and (b) and either the information set
forth in S4.3(g) or a statement that the information set forth in
S4.3(g) is located on the vehicle placard and on the non-pneumatic tire;
(b) An instruction to drive carefully when the non-pneumatic spare
tire is in use, and to install the proper pneumatic tire and rim at the
first reasonable opportunity; and

[[Page 369]]

(c) A statement that operation of the passenger car is not
recommended with more than one non-pneumatic spare tire in use at the
same time.
S8. Non-Pneumatic Rims and Wheel Center Members
S8.1 Non-Pneumatic Rim Requirements. Each non-pneumatic rim that is
part of a separable non-pneumatic spare tire assembly shall be
constructed to the dimensions of a non-pneumatic rim that is listed
pursuant to S4.4 of Sec. 571.129 for use with the non-pneumatic tire,
designated by its non-pneumatic tire identification code, with which the
vehicle is equipped.
S8.2 Wheel Center Member Requirements. Each wheel center member that
is part of a separable non-pneumatic spare tire assembly shall be
constructed to the dimensions of a wheel center member that is listed
pursuant to S4.4 of Sec. 571.129 for use with the non-pneumatic tire,
designated by its non-pneumatic tire identification code, with which the
vehicle is equipped.
[GRAPHIC] [TIFF OMITTED] TR22MR05.000

[[Page 370]]

[GRAPHIC] [TIFF OMITTED] TR22MR05.001

[36 FR 22902, Dec. 2, 1971, as amended at 37 FR 23727, Nov. 8, 1972; 40
FR 5530, Feb. 6, 1975; 47 FR 36183, Aug. 19, 1982; 49 FR 38612, Oct. 1,
1984; 55 FR 29589, July 20, 1990; 56 FR 19311, Apr. 26, 1991; 60 FR
13643, Mar. 14, 1995; 67 FR 69623, Nov. 18, 2002; 68 FR 37982, June 26,
2003; 69 FR 31317, June 3, 2004; 70 FR 14424, Mar. 22, 2005]

Effective Date Notes: 1. At 68 FR 38147, June 26, 2003, Sec.
571.110 was amended by revising S2, S4.1, S4.2.1, S4.2.2, S4.4.1(a), and
table 1 following S4.4.1(b), by adding S4.2.1.1, S4.2.1.2, S4.2.2.1,
S4.2.2.2, S4.2.2.3, and S4.4.2 and by adding to S3 in alphabetical
order, definitions for ``Rim diameter,'' ``Rim size designation,'' ``Rim
type designation,'' ``Rim width,'' and ``Weather side,'', effective June
1, 2007. At 71 FR 877, Jan. 6, 2006, the effective date was delayed
until Sept. 1, 2007. For the convenience of the user, the revised and
added text is set forth as follows:

[Page 370-372]

TITLE 49--TRANSPORTATION

CHAPTER V--NATIONAL HIGHWAY TRAFFIC
SAFETY ADMINISTRATION, DEPARTMENT
OF TRANSPORTATION

PART 571_FEDERAL MOTOR VEHICLE SAFETY STANDARDS--Table of Contents

Subpart B_Federal Motor Vehicle Safety Standards

Sec. 571.110 Standard No. 110; Tire selection and rims for motor
vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less.

* * * * *

S2. Application. This standard applies to motor vehicles with a
gross vehicle weight rating (GVWR or 4,536 kilograms (10,000 pounds) or
less, except for motorcycles, and to non-pneumatic spare tire assemblies
for those vehicles.

S3. Definitions

* * * * *

Rim diameter means nominal diameter of the bead seat.
Rim size designation means rim diameter and width.
Rim type designation means the industry of manufacturer's
designation for a rim by style or code.
Rim width means nominal distance between rim flanges.

* * * * *

Weather side means the surface area of the rim not covered by the
inflated tire.

* * * * *

S4.1. General. Vehicles shall be equipped with tires that meet the
requirements of Sec. 571.139, New pneumatic tires for light vehicles,
except that passenger cars may be

[[Page 371]]

equipped with a non-pneumatic spare tire assembly that meets the
requirements of Sec. 571.129, New non-pneumatic tires for passenger
cars and S6 and S8 of this standard. Passenger cars equipped with such
an assembly shall meet the requirements of S4.3(e), and S5, and S7 of
this standard.

* * * * *

S4.2.1 Tire load limits for passenger cars.
S4.2.1.1 The vehicle maximum load on the tire shall not be greater
than the applicable maximum load rating as marked on the sidewall of the
tire.
S4.2.1.2 The vehicle normal load on the tire shall not be greater
than 94 percent of the load rating at the vehicle manufacturer's
recommended cold inflation pressure for that tire.
S4.2.2 Tire load limits for multipurpose passenger vehicles, trucks,
buses, and trailers.
S4.2.2.1 Except as provided in S4.2.2.2, the sum of the maximum load
ratings of the tires fitted to an axle shall not be less than the GAWR
of the axle system as specified on the vehicle's certification label
required by 49 CFR part 567. If the certification label shows more than
one GAWR for the axle system, the sum shall be not less than the GAWR
corresponding to the size designation of the tires fitted to the axle.
S4.2.2.2 When passenger car (P-metric) tires are installed on an
MPV, truck, bus, or trailer, each tire's load rating is reduced by
dividing it by 1.10 before determining, under S4.2.2.1, the sum of the
maximum load ratings of the tires fitted to an axle.
S4.2.2.3 (a) For vehicles equipped with P-metric tires, the vehicle
normal load on the tire shall be no greater than the value of 94 percent
of the derated load rating at the vehicle manufacturer's recommended
cold inflation pressure for that tire.
(b) For vehicles equipped with LT tires, the vehicle normal load on
the tire shall be no greater than 94 percent of the load rating at the
vehicle manufacturer's recommended cold inflation pressure for that
tire.

* * * * *

S4.4.1 * * *
(a) Be constructed to the dimensions of a rim that is listed by the
manufacturer of the tires as suitable for use with those tires, in
accordance with S4 of Sec. 571.139.
(b) * * *

Table I--Occupant Loading and Distribution for Vehicle Normal Load for Various Designated Seating Capacities
----------------------------------------------------------------------------------------------------------------
Designated seating capacity, number of Vehicle normal load, number of Occupant distribution in a
occupants occupants normally loaded vehicle
----------------------------------------------------------------------------------------------------------------
2 through 4............................. 2.................................... 2 in front.
5 through 10............................ 3.................................... 2 in front, 1 in second seat.
11 through 15........................... 5.................................... 2 in front, 1 in second seat, 1
in third seat, 1 in fourth
seat.
16 through 22........................... 7.................................... 2 in front, 2 in second seat, 2
in third seat, 1 in fourth
seat.
----------------------------------------------------------------------------------------------------------------

S4.4.2. Rim markings for vehicles other than passenger cars. Each
rim or, at the option of the manufacturer in the case of a single-piece
wheel, each wheel disc shall be marked with the information listed in
paragraphs (a) through (e) of this S4.4.2, in lettering not less than 3
millimeters in height, impressed to a depth or, at the option of the
manufacturer, embossed to a height of not less than 0.125 millimeters.
The information listed in paragraphs (a) through (c) of this S4.2.2
shall appear on the outward side. In the case of rims of multi piece
construction, the information listed in paragraphs (a) through (e) of
this S4.2.2 shall appear on the rim base and the information listed in
paragraphs (b) and (d) of this S4.2.2 shall also appear on each other
part of the rim.
(a) A designation that indicates the source of the rim's published
nominal dimensions, as follows:
(1) ``T'' indicates The Tire and Rim Association.
(2) ``E'' indicates The European Tyre and Rim Technical
Organization.
(3) ``J'' indicates Japan Automobile Tire Manufacturers''
Association, Inc.
(4) ``L'' indicates ABPA (Brazil), a.k.a. Associacao Latino
Americana De Pneus E Aros.
(5) ``F'' indicates Tire and Rim Engineering Data Committee of South
Africa (Tredco).
(6) ``S'' indicates Scandinavian Tire and Rim Organization (STRO).
(7) ``A'' indicates The Tyre and Rim Association of Australia.
(8) ``I'' indicates Indian Tyre Technical Advisory Committee
(ITTAC).
(9) ``R'' indicates Argentine Institute of Rationalization of
Materials, a.k.a. Instituto Argentino de Racionalizaci[oacute]n de
Materiales, (ARAM).
(10) ``N'' indicates an independent listing pursuant to S4.1 of
Sec. 571.139 or S5.1(a) of Sec. 571.119.

[[Page 372]]

(b) The rim size designation, and in case of multipiece rims, the
rim type designation. For example: 20x5.50, or 20x5.5.
(c) The symbol DOT, constituting a certification by the manufacturer
of the rim that the rim complies with all applicable Federal motor
vehicle safety standards.
(d) A designation that identifies the manufacturer of the rim by
name, trademark, or symbol.
(e) The month, day and year or the month and year of manufacture,
expressed either numerically or by use of a symbol, at the option of the
manufacturer. For example: ``September 4, 2001'' may be expressed
numerically as: ``90401'', ``904, 01'' or ``01, 904''; ``September
2001'' may be expressed as: ``901'', ``9, 01'' or ``01, 9''.
(1) Any manufacturer that elects to express the date of manufacture
by means of a symbol shall notify NHTSA in writing of the full names and
addresses of all manufacturers and brand name owners utilizing that
symbol and the name and address of the trademark owner of that symbol,
if any. The notification shall describe in narrative form and in detail
how the month, day, and year or the month and year are depicted by the
symbol. Such description shall include an actual size graphic depiction
of the symbol, showing and/or explaining the interrelationship of the
component parts of the symbol as they will appear on the rim or single
piece wheel disc, including dimensional specifications, and where the
symbol will be located on the rim or single piece wheel disc. The
notification shall be received by NHTSA not less than 60 calendar days
before the first use of the symbol. The notification shall be mailed to
the Office of Vehicle Safety Compliance (NVS-222), National Highway
Traffic Safety Administration, 400 Seventh Street SW., Washington, DC
20590. All information provided to NHTSA under this paragraph will be
placed in the public docket.
(2) Each manufacturer of wheels shall provide an explanation of its
date of manufacture symbol to any person upon request.

* * * * *

2. At 70 FR 14424, Mar. 22, 2005, Sec. 571.110 was amended by
revising S4.4.2 introductory text, effective June 1, 2007. For the
convenience of the user, the revised text is set forth as follows:

[Page 372]

TITLE 49--TRANSPORTATION

CHAPTER V--NATIONAL HIGHWAY TRAFFIC
SAFETY ADMINISTRATION, DEPARTMENT
OF TRANSPORTATION

PART 571_FEDERAL MOTOR VEHICLE SAFETY STANDARDS--Table of Contents

Subpart B_Federal Motor Vehicle Safety Standards

Sec. 571.110 Standard No. 110; Tire selection and rims for motor
vehicles with a GVWR of 4,536 kilograms (10,000) pounds) or less.

* * * * *

3. At 71 FR 885, Jan. 6, 2006, Sec. 571.110 was amended by revising
S4.2.2.2 and S4.2.2.3(a), effective June 1, 2007. For the convenience of
the user, the revised text is set forth as follows:

[Page 372]

TITLE 49--TRANSPORTATION

CHAPTER V--NATIONAL HIGHWAY TRAFFIC
SAFETY ADMINISTRATION, DEPARTMENT
OF TRANSPORTATION

PART 571_FEDERAL MOTOR VEHICLE SAFETY STANDARDS--Table of Contents

Subpart B_Federal Motor Vehicle Safety Standards

Sec. 571.110 Standard No. 110--Tire selection and rims for motor
vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less.

* * * * *

S4.2.2.2 When passenger car tires are installed on an MPV, truck,
bus, or trailer, each tire's load rating is reduced by dividing it by
1.10 before determining, under S4.2.2.1, the sum of the maximum load
ratings of the tires fitted to an axle.
S4.2.2.3(a) For vehicles equipped with passenger car tires, the
vehicle normal load on the tire shall be no greater than the value of 94
percent of the derated load rating at the vehicle manufacturer's
recommended cold inflation pressure for that tire.

* * * * *