235/45R15 in inches

How tall is a 235 45R15 tire?

When converted to inches, the equivalent of a 235/45R15 tire size is 23.4x9.3R15. It means that:

  • height overall (or diameter) is 23.4 inches
  • tread width is 9.3 inches
  • wheel diameter is 15 inches

Learn more

235/45R15 tire size in inches
235/45R15 tire size chart

235/45R15 tire size in inches

235/45R15 Height / overall diameter: 23.4 inches
Height / overall diameter
23.4 inches
235/45R15 Tread width: 9.3 inches
Tread width
9.3 inches
235/45R15 Sidewall: 4.2 inches
Sidewall
4.2 inches
235/45R15 Wheel diameter: 15 inches
Wheel diameter
15 inches
235/45R15 Circumference: 73.5 inches
Circumference
73.5 inches
235/45R15 Revolutions: 863 per mile
Revolutions
863 per mile

235/45R15 — what does it mean?

  • 235 stands for tread width in millimeters
  • 45 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

235/45R15 tire code
235/45R15 tire code

How to convert 235 45R15 to inches?

First of all, we need to divide 235 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 9.3″. Then, 45% of the 9.3″ will result in 4.2″ 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 23.4″ total tire diameter (or height).

For your convenience, below is a table for 235/45R15 conversion to inches:

Inches Metric
Overall diameter (height) 23.4″ 594 mm
Tread width 9.3″ 235 mm
Wheel diameter 15″ 594 mm
Sidewall height 4.2″ 106 mm
Circumference 73.5″ 1865 mm
Revolutions 863 / ml 536 / km

Alternatives to a 235/45R15 tire

If you're looking to upsize your 235 45R15 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
125/80R15 22.8″ -0.64% 4.9″ 15″
125/90R15 23.8″ 0.46% 4.9″ 15″
135/80R15 23.6″ 0.21% 5.3″ 15″
155/65R15 23″ -0.42% 6.1″ 15″
155/70R15 23.6″ 0.21% 6.1″ 15″
165/60R15 22.8″ -0.64% 6.5″ 15″
165/65R15 23.4″ 0% 6.5″ 15″
175/60R15 23.2″ -0.21% 6.9″ 15″
175/65R15 24″ 0.66% 6.9″ 15″
185/55R15 23″ -0.42% 7.3″ 15″