Section

[Code of Federal Regulations]

[Title 49, Volume 6]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR571.110]

[Page 373-381]

TITLE 49--TRANSPORTATION

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;

(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

[[Page 374]]

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 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.

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

[[Page 375]]

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);

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 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;

[[Page 376]]

(b) It is appropriate for the load limits as calculated in

accordance with S4.2; and

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 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

[[Page 377]]

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

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.

[[Page 378]]

[GRAPHIC] [TIFF OMITTED] TR22MR05.000

[[Page 379]]

[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. For the convenience of the user, the revised and added text is

set forth as follows:

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 equipped with a non-pneumatic spare

tire assembly that meets the requirements of

[[Page 380]]

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 381]]

(b) The rim size designation, and in case of multipiece rims, the

rim type designation. For example: 20x5.50, or 20x5.5.

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:

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.

* * * * *

S4.4.2. 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

S4.4.2 (a) through (e), 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 S4.4.2 (a) through (c) shall appear on the outward side. In

the case of rims of multi piece construction, the information listed in

S4.4.2 (a) through (e) shall appear on the rim base and the information

listed in S4.4.2 (b) and (d) shall also appear on each other part of the

rim.

* * * * *