13-1
13
Consumer information and Reporting safety defectsTire information ............................................. 13-2Tire labeling ....................................................... 13-2
Recommended tire inflation pressure ............ 13-5
Glossary of tire terminology ............................ 13-6
Tire care – maintenance and safety practices 13-8
Vehicle load limit – how to determine ............. 13-8
Determining compatibility of tire and vehicle load capacities ............................................... 13-13
Adverse safety consequences of overloading on handling and stopping and on tires ........ 13-14
Steps for Determining Correct Load Limit ..... 13-14
Uniform tire quality grading standards ....... 13-15 Treadwear .......................................................... 13-15
Traction AA, A, B, C .......................................... 13-15
Temperature A, B, C ......................................... 13-16
Reporting safety defects (U SA) ................... 13-17
13-3
Consumer information and Reporting safety defects
– CONTINUED –
Example:
(6) Load Index: A numerical code which speci-
fies the maximum load a tire can carry at the
speed indicated by its speed symbol, at maxi-
mum inflation pressure.
For example, “97” means 1,609 lbs (730 kg)
Load indices apply only to the tire, not to
the vehicle. Putting a load rated tire on any
vehicle does not mean the vehicle can be
loaded up to the tire’s rated load.
(7) Speed Rating: An alphabetical system de-
scribing a tire’s capability to travel at established
and predetermined speeds.
For example, “H” means 130 mph (210 km/h)
y Speed ratings apply only to the tire, not
to the vehicle. Putting a speed rated tire on
any vehicle does not mean the vehicle can
be operated at the tire’s rated speed. y The speed rating is void if the tires are
worn out, damaged, repaired, retreaded, or
otherwise altered from their original condi-
tion. If tires are repaired, retreaded, or oth-
erwise altered, they may not be suitable for
original equipment tire designed loads and
speeds.
T Tire Identification Number (TIN)
Tire Identification Number (TIN) is marked on the
intended outboard sidewall. The TIN is com-
posed of four groups. Here is a brief review of the
TIN with a breakdown of its individual elements.
(1) Manufacturer’s Id entification Mark
P 225 / 60 R 16 97 H
Size designation (6) (7)
DOT XX XX XXX XXXX
(1) (2) (3)(4)