285/65R20 Tire Size: 34.6" Tall, a 35-Inch Tire
Straight answer
A 285/65R20 stands 34.6 inches tall and 11.2 inches wide on a 20-inch wheel, which makes it a 35-inch tire in truck-speak. NTW stocks 9 tire models in this size right now.
285/65R20 dimensions
Overall diameter
34.59"
Section width
11.22"
Sidewall height
7.29"
Wheel diameter
20"
Circumference
108.7"
Revolutions per mile
583
≈ 34.6x11.2R20 flotation. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 285/65R20 means
- 285Section width: 285 mm (11.2") wall to wall
- 65Aspect ratio: sidewall is 65% of the width, so 7.3" 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.
285/65R20 compared to nearby 20-inch sizes
Speedometer column assumes your truck is calibrated for 285/65R20 and reads 65 mph.
| Size | Height | vs 285/65R20 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 275/65R20 | 34.1" | -0.5" (-1.5%) | -0.4" | 64.0 mph | Full comparison |
| 35x11.50R20 | 35.0" | +0.4" (+1.2%) | +0.3" | 65.8 mph | Full comparison |
| 35x12.50R20 | 35.0" | +0.4" (+1.2%) | +1.3" | 65.8 mph | Full comparison |
| 35x13.50R20 | 35.0" | +0.4" (+1.2%) | +2.3" | 65.8 mph | Full comparison |
| 295/65R20 | 35.1" | +0.5" (+1.5%) | +0.4" | 66.0 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 275/65R20 does.
Tires in stock in 285/65R20
9 models, 9 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily.
| Tire | Type | Options | From |
|---|---|---|---|
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 1 | $495 |
| BFGoodrich HD All Terrain KT | All Terrain | 1 | $510 |
| Falken Wildpeak A/T4W | All Terrain | 1 | $483 |
| Falken Wildpeak R/T01 | All Terrain | 1 | $532 |
| Mickey Thompson Baja Boss AT | All Terrain | 1 | $484 |
| Nitto Recon Grappler A/T | All Terrain | 1 | $438 |
| Nitto Ridge Grappler | All Terrain | 1 | $462 |
| Nitto Terra Grappler G3 | All Terrain | 1 | $416 |
| Toyo Open Country H/T II | All Terrain | 1 | $380 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 285/65R20 tire in inches?+
A 285/65R20 is 34.59 inches tall and 11.22 inches wide, with a 7.29-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 285/65R20 a 35-inch tire?+
Close enough that everybody calls it one. It measures 34.6 inches, so it's sold and talked about as a 35. The flotation equivalent is 34.6x11.2R20.
What does 285/65R20 mean?+
285/65R20 means a tire 285 millimeters wide with a sidewall 65% as tall as it is wide, built for a 20-inch wheel.
285/65R20 vs 35x11.50R20: how much bigger?+
35x11.50R20 is 0.4 inches taller (1.2%) and 0.3 inches wider. Going from 285/65R20 to 35x11.50R20, a speedometer reading 65 mph means you're actually doing 65.8.
Looking for another size? See the full truck tire size chart.