T155/65R20 in inches

How tall is a T155 65R20 tire?

When converted to inches, the equivalent of a T155/65R20 tire size is 28x6.1R20. It means that:

  • height overall (or diameter) is 28 inches
  • tread width is 6.1 inches
  • wheel diameter is 20 inches

Learn more

T155/65R20 tire size in inches
T155/65R20 tire size chart

T155/65R20 tire size in inches

T155/65R20 Height / overall diameter: 28 inches
Height / overall diameter
28 inches
T155/65R20 Tread width: 6.1 inches
Tread width
6.1 inches
T155/65R20 Sidewall: 4 inches
Sidewall
4 inches
T155/65R20 Wheel diameter: 20 inches
Wheel diameter
20 inches
T155/65R20 Circumference: 87.9 inches
Circumference
87.9 inches
T155/65R20 Revolutions: 721 per mile
Revolutions
721 per mile

T155/65R20 — what does it mean?

  • T means "temporary"
  • 155 stands for tread width in millimeters
  • 65 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

T155/65R20 tire code
T155/65R20 tire code

How to convert T155 65R20 to inches?

First of all, we need to divide 155 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 6.1″. Then, 65% of the 6.1″ will result in 4″ 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 28″ total tire diameter (or height).

For your convenience, below is a table for T155/65R20 conversion to inches:

Inches Metric
Overall diameter (height) 28″ 711 mm
Tread width 6.1″ 155 mm
Wheel diameter 20″ 711 mm
Sidewall height 4″ 101 mm
Circumference 87.9″ 2233 mm
Revolutions 721 / ml 448 / km

Alternatives to a T155/65R20 tire

If you're looking to upsize your T155 65R20 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
305/35R20 28.4″ 0.35% 12″ 20″
275/40R20 28.6″ 0.52% 10.8″ 20″
315/35R20 28.6″ 0.52% 12.4″ 20″
245/40R20 27.8″ -0.18% 9.6″ 20″
295/35R20 28.2″ 0.18% 11.6″ 20″
285/35R20 27.8″ -0.18% 11.2″ 20″
275/35R20 27.6″ -0.35% 10.8″ 20″
155/60R20 27.4″ -0.53% 6.1″ 20″
T165/60R20 27.8″ -0.18% 6.5″ 20″
175/55R20 27.6″ -0.35% 6.9″ 20″