Tires and wheels
183
Operation
Tire size designation, load and speed
rating
1 Design standard
2 Tire width
3 Aspect ratio in %
4 Radial tire code
5 Rim diameter
6 Tire load rating
7 Tire speed rating
i For illustrative purposes only. The actual
data on tires is specific to each vehicle and may
vary from the data shown in the following illustra-
tion.
Tire sizes for Sprinters
Design standard
Depending on the design standards used,
the tire size molded into the sidewall may
have no letter or a letter 1 preceding the
tire width or the tire load rating designa-
tion.
The letters "LT" preceding the size desig-
nation:
Light Truck tire based on U.S. design stan-
dards.
The letters "C" preceding the tire load des-
ignation: Commercial vehicle tire based on
European design standards.
Tire width
Tire width 2 indicates the nominal tire
width in mm.
Aspect ratio
Aspect ratio 3 is the dimensional rela-
tionship between tire section height and
section width, and is expressed in percent-
age. The aspect ratio is arrived at by divid-
ing section height by section width.
Tire code
Tire code 4 indicates the tire construc-
tion type. The "R" stands for radial tire
type. The letter "D" means diagonal or bias
ply construction; the letter "B" means belt-
ed-bias ply construction.
Rim diameter
Rim diameter 5 is the diameter of the
bead seat, not the diameter of the rim
edge. Rim diameter is indicated in
inches (in).
Tire load rating
Tire load rating 6 is a numerical code as-
sociated with the maximum load a tire can
support.
For example, a load rating of 120 corre-
sponds to a maximum load of 3042 lbs
(1380 kg) the tire is designed to support.
If two values are given (as illustrated), the
first value, preceding the slash "/", applies
to single tires (rear axle). The second val-
ue, succeeding the slash "/", applies to
twin tires (dual wheel rear axle).
Commercial vehicle tires based on Europe-
an standards may have an additional value
in the parentheses (as illustrated). In such
cases, the value preceding the parenthe-
ses is valid for European countries and the
parenthesized for the USA and Canada.
Sprinter
2500 LT 245/75 R 16 120/116 N
3500 LT 215/85 R 16 115/112 N
LT 215/85 R 16 115/112 Q