215/85R15 in inches

How tall is a 215 85R15 tire?

When converted to inches, the equivalent of a 215/85R15 tire size is 29.4x8.5R15. It means that:

  • height overall (or diameter) is 29.4 inches
  • tread width is 8.5 inches
  • wheel diameter is 15 inches

Learn more

215/85R15 tire size in inches
215/85R15 tire size chart

215/85R15 tire size in inches

215/85R15 Height / overall diameter: 29.4 inches
Height / overall diameter
29.4 inches
215/85R15 Tread width: 8.5 inches
Tread width
8.5 inches
215/85R15 Sidewall: 7.2 inches
Sidewall
7.2 inches
215/85R15 Wheel diameter: 15 inches
Wheel diameter
15 inches
215/85R15 Circumference: 92.3 inches
Circumference
92.3 inches
215/85R15 Revolutions: 686 per mile
Revolutions
686 per mile

215/85R15 — what does it mean?

  • 215 stands for tread width in millimeters
  • 85 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

215/85R15 tire code
215/85R15 tire code

How to convert 215 85R15 to inches?

First of all, we need to divide 215 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 8.5″. Then, 85% of the 8.5″ will result in 7.2″ 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 29.4″ total tire diameter (or height).

For your convenience, below is a table for 215/85R15 conversion to inches:

Inches Metric
Overall diameter (height) 29.4″ 747 mm
Tread width 8.5″ 215 mm
Wheel diameter 15″ 747 mm
Sidewall height 7.2″ 183 mm
Circumference 92.3″ 2346 mm
Revolutions 686 / ml 426 / km

Alternatives to a 215/85R15 tire

If you're looking to upsize your 215 85R15 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
235/75R15 28.8″ -0.51% 9.3″ 15″
LT235/75R15 28.8″ -0.51% 9.3″ 15″
265/70R15 29.6″ 0.17% 10.4″ 15″
255/70R15 29″ -0.34% 10″ 15″
255/75R15 30″ 0.5% 10″ 15″
245/75R15 29.4″ 0% 9.6″ 15″
205/90R15 29.6″ 0.17% 8.1″ 15″
215/80R15 28.6″ -0.71% 8.5″ 15″
225/80R15 29.2″ -0.17% 8.9″ 15″
235/80R15 29.8″ 0.33% 9.3″ 15″