P225/75R15 in inches

How tall is a P225 75R15 tire?

When converted to inches, the equivalent of a P225/75R15 tire size is 28.4x8.9R15. It means that:

  • height overall (or diameter) is 28.4 inches
  • tread width is 8.9 inches
  • wheel diameter is 15 inches

Learn more

P225/75R15 tire size in inches
P225/75R15 tire size chart

P225/75R15 tire size in inches

P225/75R15 Height / overall diameter: 28.4 inches
Height / overall diameter
28.4 inches
P225/75R15 Tread width: 8.9 inches
Tread width
8.9 inches
P225/75R15 Sidewall: 6.7 inches
Sidewall
6.7 inches
P225/75R15 Wheel diameter: 15 inches
Wheel diameter
15 inches
P225/75R15 Circumference: 89.2 inches
Circumference
89.2 inches
P225/75R15 Revolutions: 711 per mile
Revolutions
711 per mile

P225/75R15 — what does it mean?

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

P225/75R15 tire code
P225/75R15 tire code

How to convert P225 75R15 to inches?

First of all, we need to divide 225 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 8.9″. Then, 75% of the 8.9″ will result in 6.7″ sidewall.

To get the total height or tire diameter, we need to sum the 15″ rim diameter with two of the sidewall heights. It will result in a 28.4″ total tire diameter (or height).

For your convenience, below is a table for P225/75R15 conversion to inches:

Inches Metric
Overall diameter (height) 28.4″ 721 mm
Tread width 8.9″ 225 mm
Wheel diameter 15″ 721 mm
Sidewall height 6.7″ 169 mm
Circumference 89.2″ 2264 mm
Revolutions 711 / ml 442 / km

Alternatives to a P225/75R15 tire

If you're looking to upsize your P225 75R15 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
235/75R15 28.8″ 0.38% 9.3″ 15″
275/60R15 28″ -0.35% 10.8″ 15″
LT235/75R15 28.8″ 0.38% 9.3″ 15″
225/75R15 28.4″ 0% 8.9″ 15″
215/75R15 27.6″ -0.7% 8.5″ 15″
255/70R15 29″ 0.55% 10″ 15″
235/70R15 28″ -0.35% 9.3″ 15″
325/50R15 27.8″ -0.53% 12.8″ 15″
255/65R15 28″ -0.35% 10″ 15″
ST235/75R15 28.8″ 0.38% 9.3″ 15″