345/40R17 in inches

How tall is a 345 40R17 tire?

When converted to inches, the equivalent of a 345/40R17 tire size is 27.8x13.6R17. It means that:

  • height overall (or diameter) is 27.8 inches
  • tread width is 13.6 inches
  • wheel diameter is 17 inches

Learn more

345/40R17 tire size in inches
345/40R17 tire size chart

345/40R17 tire size in inches

345/40R17 Height / overall diameter: 27.8 inches
Height / overall diameter
27.8 inches
345/40R17 Tread width: 13.6 inches
Tread width
13.6 inches
345/40R17 Sidewall: 5.4 inches
Sidewall
5.4 inches
345/40R17 Wheel diameter: 17 inches
Wheel diameter
17 inches
345/40R17 Circumference: 87.3 inches
Circumference
87.3 inches
345/40R17 Revolutions: 726 per mile
Revolutions
726 per mile

345/40R17 — what does it mean?

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

345/40R17 tire code
345/40R17 tire code

How to convert 345 40R17 to inches?

First of all, we need to divide 345 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 13.6″. Then, 40% of the 13.6″ will result in 5.4″ sidewall.

To get the total height or tire diameter, we need to sum the 17″ 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 345/40R17 conversion to inches:

Inches Metric
Overall diameter (height) 27.8″ 706 mm
Tread width 13.6″ 345 mm
Wheel diameter 17″ 706 mm
Sidewall height 5.4″ 138 mm
Circumference 87.3″ 2217 mm
Revolutions 726 / ml 451 / km

Alternatives to a 345/40R17 tire

If you're looking to upsize your 345 40R17 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
225/65R17 28.4″ 0.53% 8.9″ 17″
305/45R17 27.8″ 0% 12″ 17″
255/55R17 28″ 0.18% 10″ 17″
225/60R17 27.6″ -0.18% 8.9″ 17″
215/65R17 28″ 0.18% 8.5″ 17″
145/90R17 27.4″ -0.36% 5.7″ 17″
155/90R17 28″ 0.18% 6.1″ 17″
165/80R17 27.4″ -0.36% 6.5″ 17″
T165/80R17 27.4″ -0.36% 6.5″ 17″
215/60R17 27.2″ -0.54% 8.5″ 17″