Dodge 2010 Challenger - Owner Manual - Manual (Page 290)

CAUTION!
Do not use two different size tires on the rear wheels,
as this can result in rear axle damage.
Tire Sizing Chart
TIRE SIZING TERMS
Size Designation:
P = Passenger Car tire size based on U.S. design standards
؆....blank....؆ = Passenger Car tire based on European design standards
LT
= Light Truck tire based on U.S. design standards
T = Temporary spare tire
31 = Overall diameter in inches (in)
215 = Section width in millimeters (mm)
65 = Aspect ratio in percent (%)
— Ratio of section height to section width of tire
10.5 = Section width in inches (in)
R = Construction code
—
ЉRЉ means radial construction
288 STARTING AND OPERATING