Tire Size Conversion
285/70r17 to inches
Precise conversion of tire size 285/70r17: section width, sidewall height, overall diameter, circumference, and revolutions per mile. Includes exact mm ↔ inches results and quick guidance.
Section width
285 mm
11.22 inches
Sidewall height
199.5 mm
7.85" (70% of width)
Wheel (rim) diameter
17"
431.8 mm
Overall diameter
32.71"
830.8 mm
Circumference
102.76"
2610.0 mm
Revolutions per mile/km
617 revs/mile
383 revs/km
About 285/70r17 tire size
The size 285/70r17 indicates a section width of 285 mm (11.22 inches), an aspect ratio of 70% (sidewall height 199.5 mm or 7.85 inches), and a 17-inch wheel. Overall diameter calculates to 32.71 inches (830.8 mm), with circumference 102.76 inches.
Use these measurements to estimate speedometer error and clearance changes when switching sizes. For multi-size comparison and speed error calculation, try our dedicated tire size calculator.
Common tire sizes
Compare 285/70r17 with other popular tire sizes to find the perfect fit for your vehicle.