Inches from any size
Overall diameter, section width, sidewall height, circumference, and revolutions per mile for the size you enter.
Tire size converter
Convert a Tacoma tire size to inches.
Enter a metric or flotation size to see it in inches, plus the equivalent size in the other format.
What it does
How this tool helps.
Metric and flotation
Shows the equivalent in the other format, so 285/70R17 and 33x12.50R17 can be compared directly.
Format explainer
Clarifies that a flotation size leads with diameter while a metric size leads with section width in millimeters.
Related tools and guides
Tire Size to Inches Converter FAQ.
265/70R17 is about 31.6 inches in overall diameter with a 10.4 inch section width on a 17 inch wheel. Enter it above to see sidewall height, circumference, and revolutions per mile.
Close. 285/70R17 calculates to about 32.7 inches, and real-world diameter varies by brand and tread from roughly 32.7 to 33.1 inches, so it is marketed as a 33.
In flotation sizing the first number is overall diameter in inches. In metric sizing the first number is section width in millimeters. They only line up because a 285/70R17 happens to be about 32.7 inches tall.