What size is a 305 tire?
Ethan Hayes
Published Jan 05, 2026
305/35R20 tires have a diameter of 28.4", a section width of 12.0", and a wheel diameter of 20".
What tire size is 305 equal to?
305/55R20 ConversionWhen converted to inches, 305/55R20 is equivalent to 33.2x12R20. 305/55R20 tire has a section width of 12 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 20 inches represents the size of the wheel the tire can be mounted on.