P245/60R18 in inches

How tall is a P245 60R18 tire?

When converted to inches, the equivalent of a P245/60R18 tire size is 29.6x9.6R18. It means that:

  • height overall (or diameter) is 29.6 inches
  • tread width is 9.6 inches
  • wheel diameter is 18 inches

Learn more

P245/60R18 tire size in inches
P245/60R18 tire size chart

P245/60R18 tire size in inches

P245/60R18 Height / overall diameter: 29.6 inches
Height / overall diameter
29.6 inches
P245/60R18 Tread width: 9.6 inches
Tread width
9.6 inches
P245/60R18 Sidewall: 5.8 inches
Sidewall
5.8 inches
P245/60R18 Wheel diameter: 18 inches
Wheel diameter
18 inches
P245/60R18 Circumference: 92.9 inches
Circumference
92.9 inches
P245/60R18 Revolutions: 682 per mile
Revolutions
682 per mile

P245/60R18 — what does it mean?

  • P means "passenger car"
  • 245 stands for tread width in millimeters
  • 60 is an aspect ration between the tread width and the sidewall in percents
  • R means that the tire has a radial construction
  • 18 is a wheel diameter (or rim) in inches

P245/60R18 tire code
P245/60R18 tire code

How to convert P245 60R18 to inches?

First of all, we need to divide 245 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 9.6″. Then, 60% of the 9.6″ will result in 5.8″ sidewall.

To get the total height or tire diameter, we need to sum the 18″ rim diameter with two of the sidewall heights. It will result in a 29.6″ total tire diameter (or height).

For your convenience, below is a table for P245/60R18 conversion to inches:

Inches Metric
Overall diameter (height) 29.6″ 752 mm
Tread width 9.6″ 245 mm
Wheel diameter 18″ 752 mm
Sidewall height 5.8″ 147 mm
Circumference 92.9″ 2361 mm
Revolutions 682 / ml 424 / km

Alternatives to a P245/60R18 tire

If you're looking to upsize your P245 60R18 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
265/55R18 29.4″ -0.17% 10.4″ 18″
255/55R18 29″ -0.5% 10″ 18″
275/55R18 29.8″ 0.17% 10.8″ 18″
235/60R18 29.2″ -0.33% 9.3″ 18″
245/60R18 29.6″ 0% 9.6″ 18″
285/55R18 30.4″ 0.66% 11.2″ 18″
235/65R18 30″ 0.33% 9.3″ 18″
255/60R18 30″ 0.33% 10″ 18″
T175/90R18 30.4″ 0.66% 6.9″ 18″
165/90R18 29.8″ 0.17% 6.5″ 18″