285/35R20 in inches

How tall is a 285 35R20 tire?

When converted to inches, the equivalent of a 285/35R20 tire size is 27.8x11.2R20. It means that:

  • height overall (or diameter) is 27.8 inches
  • tread width is 11.2 inches
  • wheel diameter is 20 inches

Learn more

285/35R20 tire size in inches
285/35R20 tire size chart

285/35R20 tire size in inches

285/35R20 Height / overall diameter: 27.8 inches
Height / overall diameter
27.8 inches
285/35R20 Tread width: 11.2 inches
Tread width
11.2 inches
285/35R20 Sidewall: 3.9 inches
Sidewall
3.9 inches
285/35R20 Wheel diameter: 20 inches
Wheel diameter
20 inches
285/35R20 Circumference: 87.3 inches
Circumference
87.3 inches
285/35R20 Revolutions: 726 per mile
Revolutions
726 per mile

285/35R20 — what does it mean?

  • 285 stands for tread width in millimeters
  • 35 is an aspect ration between the tread width and the sidewall in percents
  • R means that the tire has a radial construction
  • 20 is a wheel diameter (or rim) in inches

285/35R20 tire code
285/35R20 tire code

How to convert 285 35R20 to inches?

First of all, we need to divide 285 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 11.2″. Then, 35% of the 11.2″ will result in 3.9″ sidewall.

To get the total height or tire diameter, we need to sum the 20″ rim diameter with two of the sidewall heights. It will result in a 27.8″ total tire diameter (or height).

For your convenience, below is a table for 285/35R20 conversion to inches:

Inches Metric
Overall diameter (height) 27.8″ 706 mm
Tread width 11.2″ 285 mm
Wheel diameter 20″ 706 mm
Sidewall height 3.9″ 100 mm
Circumference 87.3″ 2217 mm
Revolutions 726 / ml 451 / km

Alternatives to a 285/35R20 tire

If you're looking to upsize your 285 35R20 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
305/35R20 28.4″ 0.53% 12″ 20″
255/35R20 27″ -0.72% 10″ 20″
245/40R20 27.8″ 0% 9.6″ 20″
295/35R20 28.2″ 0.35% 11.6″ 20″
275/35R20 27.6″ -0.18% 10.8″ 20″
155/60R20 27.4″ -0.36% 6.1″ 20″
155/65R20 28″ 0.18% 6.1″ 20″
175/55R20 27.6″ -0.18% 6.9″ 20″
195/50R20 27.8″ 0% 7.7″ 20″
225/40R20 27″ -0.72% 8.9″ 20″