387
Operation
Tires and wheels
4
U.S. tire regulations require each new
tire manufacturer or tire retreader to
mold a TIN into or onto a side wall of
each tire produced.
The TIN is a unique identifier which facil-
itates efforts by tire manufactures to no-
tify purchasers in recall situations or
other safety matters concerning tires
and gives purchasers the means to easi-
ly identify such tires.
The TIN is comprised of the “manufac-
turer’s identification mark”, “tire size”,
“tire type code” and “date of manufac-
ture”.
Index Speed rating
F up to 50 mph (80 km/h)
G up to 56 mph (90 km/h)
J up to 62 mph (100 km/h)
K up to 68 mph (110 km/h)
L up to 74 mph (120 km/h)
M up to 80 mph (130 km/h)
N up to 87 mph (140 km/h)
P up to 93 mph (150 km/h)
Q up to 100 mph (160 km/h)
R up to 106 mph (170 km/h)
i
Tire load rating 5 and tire speed
rating
6 are also referred to as “ser-
vice description”.
DOT, Tire Identification Number
(TIN)
nf_BA.book Page 387 Friday, January 25, 2008 3:53 PM
