the year of manufacture. For example,atire that
is marked with "3208" wa smanufactured in
week 32 in 2008.
iTire data is vehicle-specific and mayd eviate
fromt he data in the example.
Tire characteristics
Thisinformation describe sthe typ eoftire cord
and the numbe roflayersins idewall :and
under tire tread ;.
iTire data is vehicle-specific and mayd eviate
fromt he data in the example.
Definition sfor tire sand loading
Tire structure and characteristics
Describe sthe numbe roflayer sort he numbe rof
rubber-coated belts in the tire trea dand the tire
wall .These consis tofsteel,nylon, polyester,
and othe rmaterials.
Bar
Metric uni tfor tire pressure. 14.5038 pounds
pe rs quare inch (psi)a nd 100 kilopascal s(kPa)
ar et he equivalent of 1bar.
DO T(De partmen tofTransportation)
DOT marked tire sfulfill the requirements of the
United State sDepartment of Transportation.
Averag eweigh tofv ehicle occupants
The numbe rofoccupants for which the vehicle
is designe dmultiplie dby68k ilograms (15 0lbs).
Uniform Tire Quality Grading Standards
Au nifor mstandard to grade the quality of tires
with regar dtotreadquali ty,t ractio nand tem-
peratur echaracteristics .The qualit ygrading
assessment is made by the manufacturer fol-
lowing specifications fromt he U.S government.
The quality grade of atire is imprinted on the
sidewall of the tire.
Recommende dtire pressure
The recommended tire pressures ar ethe pres-
sures specifie dfor the tire smounted on the
vehicl eatthe factory.
The tire and load information table
1contains the
recommende dtire pressures for col dtires, the
maximum permissibl eloa da nd the maximum
permis sibleve
hiclespeed.
The tire pressure table contains the recommen-
de dt ire pressure for col dtiresu nder various
operating conditions ,i.e .loadi ng and/or speed
of the vehicle.
Increase dvehicle weight due to optional
equipment
The combine dweigh tofa llstandard and
optional equipment availabl efor the vehicle,
regardles sofwhether it is actually installe don
the vehicl eornot.
Wheel rim
The part of the whee lonwhich the tire is moun-
ted.
GAWR (Gros sAxleW eight Rating)
GAWRisthe maximum gross axl eweigh trating.
The actual load on an axl emustn eve rexceed
the gross axl eweigh trating .You can fin dthe
maximum gross axl eweigh trating on the B-pillar
on the driver's side (
Ypage 294).
Speed index
The spee dindex is part of the tire identification.
It specifie sthe spee drange for which the tire is
approved.
GTW (Gros sTrailer Weight)
GTWist he tota lofweightofat railer and the
weight of the load ,accessorie setc. on the
trailer.
1Onl yfor vehicles with agross weight of less tha n10,000 lb s(4536 kg).
284What yous hould knowabout wheels an dtires
Wheel sand tires
