Table of Contents
Advertisement
Whee l s
"XL" "xl" "EXTRA LOAD" or "RF"
I
I
I
on the s idewal l.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the
bead sea t . If you change yo ur
wheel size , you w ill have to pur-
chase new tires to match the new
rim diameter .
Rim size designation
means rim diameter and width.
Rim width
means nomina l distance between
rim flanges .
Sidewall
means that port ion of a t ire be-
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend -
ed periods of t ime. The rat ings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢
table
on page 234 . You may not find
this information on all tires be-
cause it is not required by law .
238
The speed rating letter code ,
where applicable , is mo lded on
the tire sidewall and indicates the
maximum permiss ible road
speeds ¢ .&. i n Winter tires on
page 248.
Tire pressure monitoring
system*
means a system that detects
when one or mo re of a ve hicle's
tires are under inflated and illumi -
na t es a low tire pressu re warning
tellta le .
Tread
means that portion of a tire that
comes into contact with the road.
Tread separation
means pu lling away of the tread
from the t ire carcass.
Treadwear indicators (TWI)
means the projections wit hin the
principal grooves designed to give
a visua l indication of the deg rees
of wear of the tread . See
¢
page 242 , Treadwear indicator
for mo re information on measur-
ing t ire wear.
Advertisement
Table of Contents
