Toyota GR Supra Owner's Manual page 267

R: radial tire code
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on
ZR tires
Maximum tire load
Maximum tire load is the maxi-
mum permissible weight for
which the tire is approved.
Locate the maximum tire load
on the tire sidewall and the
Gross Axle Weight Rating –
GAWR – on the certification
label on the driver door B-pillar.
Divide the tire load by 1.1. It
must be greater than one-half of
the vehicle's Gross Axle Weight
Rating – GAWR. Note, front vs.
rear GAWR and tire loads,
respectively.
Speed letter
Q = up to 100 mph/160 km/h
R = up to 106 mph/170 km/h
S = up to 112 mph/180 km/h
T = up to 118 mph/190 km/h
H = up to 131 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
Tire Identification Number
DOT code: DOT xxxx xxx 3818
Supra Owner's Manual
6-1. MOBILITY
xxxx: manufacturer code for the
tire brand
xxx: tire size and tire design
3818: tire age
Tires with DOT codes meet the
guidelines of the U.S. Depart-
ment of Transportation.
Tire age
Recommendation
Regardless of the tire tread,
replace tires at least every 6
years.
Manufacture date
You can find the manufacture
date of the tire on the tire's side-
wall.
Manufacture
Designation
DOT ... 3818 38th week, 2018
Uniform Tire Quality Grad-
ing
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width.
E.g.: Treadwear 200; Traction
AA; Temperature A
DOT Quality Grades
Treadwear
267
6
date