ST235/75R15 in inches

How tall is a ST235 75R15 tire?

When converted to inches, the equivalent of a ST235/75R15 tire size is 28.8x9.3R15. It means that:

  • height overall (or diameter) is 28.8 inches
  • tread width is 9.3 inches
  • wheel diameter is 15 inches

Learn more

ST235/75R15 tire size in inches
ST235/75R15 tire size chart

ST235/75R15 tire size in inches

ST235/75R15 Height / overall diameter: 28.8 inches
Height / overall diameter
28.8 inches
ST235/75R15 Tread width: 9.3 inches
Tread width
9.3 inches
ST235/75R15 Sidewall: 6.9 inches
Sidewall
6.9 inches
ST235/75R15 Wheel diameter: 15 inches
Wheel diameter
15 inches
ST235/75R15 Circumference: 90.4 inches
Circumference
90.4 inches
ST235/75R15 Revolutions: 700 per mile
Revolutions
700 per mile

ST235/75R15 — what does it mean?

  • ST means "special trailer"
  • 235 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

ST235/75R15 tire code
ST235/75R15 tire code

How to convert ST235 75R15 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, 75% of the 9.3″ will result in 6.9″ 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 28.8″ total tire diameter (or height).

For your convenience, below is a table for ST235/75R15 conversion to inches:

Inches Metric
Overall diameter (height) 28.8″ 732 mm
Tread width 9.3″ 235 mm
Wheel diameter 15″ 732 mm
Sidewall height 6.9″ 176 mm
Circumference 90.4″ 2298 mm
Revolutions 700 / ml 435 / km

Alternatives to a ST235/75R15 tire

If you're looking to upsize your ST235 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% 9.3″ 15″
275/60R15 28″ -0.73% 10.8″ 15″
LT235/75R15 28.8″ 0% 9.3″ 15″
225/75R15 28.4″ -0.38% 8.9″ 15″
265/70R15 29.6″ 0.67% 10.4″ 15″
255/70R15 29″ 0.17% 10″ 15″
235/70R15 28″ -0.73% 9.3″ 15″
245/75R15 29.4″ 0.51% 9.6″ 15″
255/65R15 28″ -0.73% 10″ 15″
ST225/75R15 28.4″ -0.38% 8.9″ 15″