tireheight.com255/60R20 in inches
A 255/60R20 tire is 32.0″ tall and 10.0″ wide, and fits a 20″ wheel. In inches it is written 32.0×10.0R20.
How tall 255/60R20 tires really are
Heights published by BFGoodrich and Michelin for all 7 tires in this size. Their published revolutions per mile work out to 31.1″ under load (below).
Real 255/60R20 tires measure 32.00–32.10″, against 32.05″ from the size code. They run both taller and shorter than the size code.
Published revs per mile (649) mean the tire rolls like a 31.1″ tire on the vehicle. Use this for speedometer calibration.
The lightest (Michelin Primacy All Season, XL) is 20.1 lb lighter per corner than the heaviest (BFGoodrich All-Terrain T/A KO3, LT D).
7 tires in 255/60R20
Sort by the spec you care about.
| Load | Revs/mi | Source | |||||
|---|---|---|---|---|---|---|---|
| Michelin Primacy All SeasonTouring | XL · 113Y | 32.10 | 32.9 | 8.5 | 2,535 | 649 | Spec page |
| Michelin Primacy All SeasonTouring | XL · 113V | 32.10 | 33.1 | 8.5 | 2,535 | 649 | Spec page |
| Michelin Latitude Tour HPAll-season | XL · 113V | 32.00 | 34.4 | 9.0 | 2,305 | 649 | Spec page |
| Michelin X-Ice SnowWinter | XL · 113T | 32.05 | 35.1 | 10.5 | 2,535 | 649 | Spec page |
| Michelin Defender LTX M/S 2All-season | XL · 113H | 32.00 | 35.3 | 11.0 | 2,535 | 649 | Spec page |
| BFGoodrich Trail-Terrain T/A+ | XL · 113V | 32.00 | 37.3 | 10.5 | 2,535 | 649 | Spec page |
| BFGoodrich All-Terrain T/A KO3All-terrain | LT D · 115S | 32.00 | 53.0 | 15.0 | 2,680 | 649 | Spec page |
Is 255/60R20 a 32-inch tire?
Yes. The size code works out to 32.05″, and the 7 tires here publish 32.00–32.10″, so people call it a 32.
All 32-inch tire sizes, on every wheel size.
Compare with nearby sizes
Differences in overall diameter, calculated from each size code.
How to read 255/60R20
A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 153.0 mm or 6.02 inches.
Radial construction.
Mounts on a 20-inch wheel. Approved wheel widths run 7.0″ to 9.0″.
Each tire carries up to 2,535 lb (1,150 kg) at its maximum pressure.
Rated for up to 149 mph sustained.
Printed after the size.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 32.05 | 814 mm |
| Section width | 10.04 | 255 mm |
| Sidewall height | 6.02 | 153.0 mm |
| Circumference | 100.7 | 2,557 mm |
| Revolutions per mile (calculated, unloaded) | 629.3 | 391 per km |
| Revolutions per mile (published by manufacturers) | 649 | 403 per km |
| Approved wheel width | 7.0–9.0 | 178–229 mm |
Speedometer error after switching to 255/60R20
Questions about 255/60R20
What is 255/60R20 in inches?
32.05 inches tall, 10.04 inches wide, on a 20-inch wheel. Written in inches, that is roughly 32.0×10.0R20.
How much does a 255/60R20 tire weigh?
Between 32.9 lb and 53.0 lb for the 7 tires listed here. The lightest is the Michelin Primacy All Season (XL); the heaviest is the BFGoodrich All-Terrain T/A KO3 (LT D).
What wheel width do I need for 255/60R20?
Manufacturers approve 7.0–9.0″ wide wheels for this size.
How many revolutions per mile does a 255/60R20 make?
Published figures run 649 revolutions per mile. The calculated figure is 629.3, but manufacturers measure the tire under load, where it rolls on a smaller radius.
What is the difference between P255/60R20 and LT255/60R20?
Passenger tires (6 here) are built for passenger loads, with max loads of 2305–2535 lb. Light-truck tires (1 here) come in heavier load ranges with max loads of 2680 lb, and are usually heavier with deeper tread.
How much taller is 255/60R20 than 305/50R20?
0.04 inches taller on paper (32.05″ vs 32.01″), which raises the axle about 0.02″. Your speedometer will read about 0.1% slow.