tireheight.com285/60R20 in inches
A 285/60R20 tire is 33.5″ tall and 11.2″ wide, and fits a 20″ wheel. In inches it is written 33.5×11.2R20.
How tall 285/60R20 tires really are
Heights published by BFGoodrich, General, Michelin, Mickey Thompson and Toyo for all 14 tires in this size. Their published revolutions per mile work out to 32.4–32.5″ under load (below).
Real 285/60R20 tires measure 33.40–33.90″, against 33.46″ from the size code. They run both taller and shorter than the size code.
- Mickey Thompson Baja Legend EXP33.90″ +0.44″
- Mickey Thompson Baja Boss A/T33.60″ +0.14″
- BFGoodrich All-Terrain T/A KO333.50″ +0.04″
- BFGoodrich HD-Terrain T/A KT33.50″ +0.04″
- General Grabber A/TX33.50″ +0.04″
- Michelin Agilis CrossClimate 233.50″ +0.04″
- Toyo Open Country R/T Pro33.50″ +0.04″
- Toyo Open Country A/T III · 233.47″ +0.00″
- Toyo Open Country R/T Trail33.47″ +0.00″
- Toyo Open Country C/T33.46″ −0.00″
- Toyo Open Country H/T II33.46″ −0.00″
- Toyo Open Country M/T33.46″ −0.00″
- Michelin Defender LTX Platinum33.40″ −0.06″
Published revs per mile (621–622) mean the tire rolls like a 32.4–32.5″ tire on the vehicle. Use this for speedometer calibration.
The lightest (Toyo Open Country A/T III, SL) is 21.3 lb lighter per corner than the heaviest (BFGoodrich HD-Terrain T/A KT, LT E).
14 tires in 285/60R20
Sort by the spec you care about.
| Load | Revs/mi | Source | |||||
|---|---|---|---|---|---|---|---|
| Toyo Open Country A/T IIIAll-terrain | SL · 116T | 33.47 | 48.0 | 13.6 | 2,756 | 621 | Spec page |
| Toyo Open Country A/T IIIAll-terrain | LT E · 125/122R | 33.47 | 55.9 | 16.5 | 3,640 | 621 | Spec page |
| Toyo Open Country R/T TrailRugged-terrain | LT E · 125/122R | 33.47 | 57.1 | 16.5 | 3,640 | 621 | Spec page |
| General Grabber A/TXAll-terrain | LT E · 125S | 33.50 | 57.9 | 16.0 | 3,640 | 621 | Spec page |
| Toyo Open Country H/T IIHighway | LT E · 125/122R | 33.46 | 59.2 | 15.8 | 3,640 | 621 | Spec page |
| Michelin Agilis CrossClimate 2Commercial | LT E · 125/122R | 33.50 | 59.3 | 14.0 | 3,640 | 622 | Spec page |
| Michelin Defender LTX PlatinumAll-season | LT E · 125S | 33.40 | 59.8 | 14.0 | 3,640 | 622 | Spec page |
| Mickey Thompson Baja Legend EXPAll-terrain | LT E · 125Q | 33.90 | 62.0 | 18.5 | 3,640 | – | Spec page |
| BFGoodrich All-Terrain T/A KO3All-terrain | LT E · 125S | 33.50 | 62.6 | 16.0 | 3,640 | 622 | Spec page |
| Toyo Open Country C/TCommercial | LT E · 125/122Q | 33.46 | 63.8 | 18.4 | 3,640 | 621 | Spec page |
| Toyo Open Country R/T ProRugged-terrain | LT E · 125/122Q | 33.50 | 66.6 | 17.1 | 3,640 | 621 | Spec page |
| Mickey Thompson Baja Boss A/TAll-terrain | LT E · 125Q | 33.60 | 67.0 | 18.5 | 3,640 | – | Spec page |
| Toyo Open Country M/TMud-terrain | LT E · 125/122Q | 33.46 | 68.7 | 18.9 | 3,640 | 621 | Spec page |
| BFGoodrich HD-Terrain T/A KT | LT E · 125Q | 33.50 | 69.3 | 18.0 | 3,640 | 622 | Spec page |
Is 285/60R20 a 34-inch tire?
Close. The size code works out to 33.46″, and the 14 tires here publish 33.40–33.90″, so people call it a 34.
All 34-inch tire sizes, on every wheel size.
Compare with nearby sizes
Differences in overall diameter, calculated from each size code.
| Size | Diameter ″ | vs 285/60R20 | Difference |
|---|---|---|---|
| 285/55R20 | 32.34 | -1.12″ | -3.4% |
| 265/60R20 | 32.52 | -0.94″ | -2.8% |
| 295/55R20 | 32.78 | -0.69″ | -2.1% |
| 275/60R20 | 32.99 | -0.47″ | -1.4% |
| 33×11.50R20 | 33.00 | -0.46″ | -1.4% |
| 33×12.50R20 | 33.00 | -0.46″ | -1.4% |
| 33×13.50R20 | 33.00 | -0.46″ | -1.4% |
| 305/55R20 | 33.21 | -0.26″ | -0.8% |
| 295/60R20 | 33.94 | +0.47″ | +1.4% |
| 275/65R20 | 34.07 | +0.61″ | +1.8% |
How to read 285/60R20
Marks a light truck (LT) tire.
A percentage, not a measurement: the sidewall is 60% as tall as the tire is wide, which is 171.0 mm or 6.73 inches.
Radial construction.
Mounts on a 20-inch wheel. Approved wheel widths run 8.0″ to 10.0″.
Each tire carries up to 3,640 lb (1,650 kg) on its own, or 3,305 lb (1,500 kg) each when paired on a dual rear axle.
Rated for up to 106 mph sustained.
Printed separately as "LOAD RANGE E": a 10-ply rating, inflated up to 80 psi (standard load-range table). The load range E tires here carry up to 3,640 lb each, as published.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 33.46 | 850 mm |
| Section width | 11.22 | 285 mm |
| Sidewall height | 6.73 | 171.0 mm |
| Circumference | 105.1 | 2,670 mm |
| Revolutions per mile (calculated, unloaded) | 602.7 | 374 per km |
| Revolutions per mile (published by manufacturers) | 621–622 | 386 per km |
| Approved wheel width | 8.0–10.0 | 203–254 mm |
Speedometer error after switching to 285/60R20
Questions about 285/60R20
What is 285/60R20 in inches?
33.46 inches tall, 11.22 inches wide, on a 20-inch wheel. Written in inches, that is roughly 33.5×11.2R20.
How much does a 285/60R20 tire weigh?
Between 48.0 lb and 69.3 lb for the 14 tires listed here. The lightest is the Toyo Open Country A/T III (SL); the heaviest is the BFGoodrich HD-Terrain T/A KT (LT E).
What wheel width do I need for 285/60R20?
Manufacturers approve 8.0–10.0″ wide wheels for this size.
How many revolutions per mile does a 285/60R20 make?
Published figures run 621–622 revolutions per mile. The calculated figure is 602.7, but manufacturers measure the tire under load, where it rolls on a smaller radius.
What is the difference between P285/60R20 and LT285/60R20?
Passenger tires (1 here) are built for passenger loads, with max loads of 2756 lb. Light-truck tires (13 here) come in heavier load ranges with max loads of 3640 lb, and are usually heavier with deeper tread.
How much taller is 285/60R20 than 305/55R20?
0.26 inches taller on paper (33.46″ vs 33.21″), which raises the axle about 0.13″. Your speedometer will read about 0.8% slow.