Tire Size Converter

Convert metric tire sizes to inches.

Example: 255/45R17

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R

Tire Section Width
Tire Side
Tire Circumference
Metric Inches
Overall Diameter
Tread Width
Aspect Ratio
Rim Diameter
Sidewall Height
Circumference
Revolutions

Popular Tire Size Conversions

285/25R20 = 25.6x11.2R20
205/40R18 = 24.4x8.1R18
155/70R13 = 21.6x6.1R13
225/45R20 = 28x8.9R20
255/35R16 = 23x10R16
165/40R18 = 23.2x6.5R18
275/60R14 = 27x10.8R14
105/70R14 = 19.8x4.1R14
135/90R14 = 23.6x5.3R14
325/40R21 = 31.2x12.8R21
205/50R15 = 23.1x8.1R15
305/60R18 = 32.4x12R18
155/80R18 = 27.8x6.1R18
345/30R20 = 28.2x13.6R20
225/75R15 = 28.3x8.9R15
205/35R18 = 23.7x8.1R18
145/60R13 = 19.8x5.7R13
175/45R18 = 24.2x6.9R18
225/90R16 = 32x8.9R16
295/40R20 = 29.3x11.6R20