285/60R20 Tire Size: 33.5" Tall, a 33-Inch Tire
Straight answer
A 285/60R20 stands 33.5 inches tall and 11.2 inches wide on a 20-inch wheel, which makes it a 33-inch tire in truck-speak. NTW stocks 17 tire models in this size right now.
285/60R20 dimensions
Overall diameter
33.46"
Section width
11.22"
Sidewall height
6.73"
Wheel diameter
20"
Circumference
105.1"
Revolutions per mile
603
≈ 33.5x11.2R20 flotation. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 285/60R20 means
- 285Section width: 285 mm (11.2") wall to wall
- 60Aspect ratio: sidewall is 60% of the width, so 6.7" tall
- RRadial construction
- 20Fits a 20-inch wheel
Want the full rundown on sidewall codes, load index, and speed rating? Read how to read a tire size.
285/60R20 compared to nearby 20-inch sizes
Speedometer column assumes your truck is calibrated for 285/60R20 and reads 65 mph.
| Size | Height | vs 285/60R20 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 275/60R20 | 33.0" | -0.5" (-1.4%) | -0.4" | 64.1 mph | Full comparison |
| 33x12.50R20 | 33.0" | -0.5" (-1.4%) | +1.3" | 64.1 mph | Full comparison |
| 305/55R20 | 33.2" | -0.3" (-0.8%) | +0.8" | 64.5 mph | Full comparison |
| 295/60R20 | 33.9" | +0.5" (+1.4%) | +0.4" | 65.9 mph | Full comparison |
| 275/65R20 | 34.1" | +0.6" (+1.8%) | -0.4" | 66.2 mph | Full comparison |
Rule of thumb: inside 3% of stock diameter feels stock; past 8 to 10% and most owners budget for a re-gear. Run your exact numbers in the tire size calculator, or check what stepping down to 33x12.50R20 does.
Trucks that come with 285/60R20
- Ram 3500 (2011–2026) · 2013–2024: Limited, SLT, Laramie Limited and others
- Ram 2500 (2011–2026) · 2014–2026: Limited, Laramie Limited, SLT and others
Tires in stock in 285/60R20
17 models, 18 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily.
| Tire | Type | Options | From |
|---|---|---|---|
| Nitto Terra Grappler G3 | All Terrain | 2 | $384 |
| AMP Off-Road Terrain Pro AT | All Terrain | 1 | $333 |
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 1 | $432 |
| BFGoodrich HD All Terrain KT | All Terrain | 1 | $460 |
| Falken Wildpeak A/T4W | All Terrain | 1 | $430 |
| Falken Wildpeak R/T01 | All Terrain | 1 | $478 |
| Mickey Thompson Baja Boss AT | All Terrain | 1 | $448 |
| Mickey Thompson Baja Legend EXP | All Terrain | 1 | $404 |
| Nitto Recon Grappler A/T | All Terrain | 1 | $422 |
| Nitto Ridge Grappler | All Terrain | 1 | $446 |
| Toyo Open Country A/T III | All Terrain | 1 | $444 |
| Toyo Open Country C/T | All Terrain | 1 | $456 |
| Toyo Open Country H/T II | All Terrain | 1 | $369 |
| Toyo Open Country M/T | Mud Terrain | 1 | $483 |
| Toyo Open Country R/T | All Terrain | 1 | $449 |
| Toyo Open Country R/T Pro | All Terrain | 1 | $483 |
| Toyo Open Country R/T Trail | All Terrain | 1 | $458 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 285/60R20 tire in inches?+
A 285/60R20 is 33.46 inches tall and 11.22 inches wide, with a 6.73-inch sidewall on a 20-inch wheel. Real mounted tires vary a few tenths of an inch by brand, load range, and rim width.
Is 285/60R20 a 33-inch tire?+
Close enough that everybody calls it one. It measures 33.5 inches, so it's sold and talked about as a 33. The flotation equivalent is 33.5x11.2R20.
What does 285/60R20 mean?+
285/60R20 means a tire 285 millimeters wide with a sidewall 60% as tall as it is wide, built for a 20-inch wheel.
285/60R20 vs 295/60R20: how much bigger?+
295/60R20 is 0.5 inches taller (1.4%) and 0.4 inches wider. Going from 285/60R20 to 295/60R20, a speedometer reading 65 mph means you're actually doing 65.9.
Looking for another size? See the full truck tire size chart.