275/65R20 Tire Size: 34.1" Tall, a 34-Inch Tire
Straight answer
A 275/65R20 stands 34.1 inches tall and 10.8 inches wide on a 20-inch wheel, which makes it a 34-inch tire in truck-speak. NTW stocks 25 tire models in this size right now.
275/65R20 dimensions
Overall diameter
34.07"
Section width
10.83"
Sidewall height
7.04"
Wheel diameter
20"
Circumference
107.0"
Revolutions per mile
592
≈ 34.1x10.8R20 flotation. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 275/65R20 means
- 275Section width: 275 mm (10.8") wall to wall
- 65Aspect ratio: sidewall is 65% of the width, so 7.0" 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.
275/65R20 compared to nearby 20-inch sizes
Speedometer column assumes your truck is calibrated for 275/65R20 and reads 65 mph.
| Size | Height | vs 275/65R20 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 275/60R20 | 33.0" | -1.1" (-3.2%) | 0.0" | 62.9 mph | Full comparison |
| 33x12.50R20 | 33.0" | -1.1" (-3.2%) | +1.7" | 62.9 mph | Full comparison |
| 305/55R20 | 33.2" | -0.9" (-2.5%) | +1.2" | 63.3 mph | Full comparison |
| 295/60R20 | 33.9" | -0.1" (-0.4%) | +0.8" | 64.7 mph | Full comparison |
| 35x12.50R20 | 35.0" | +0.9" (+2.7%) | +1.7" | 66.8 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 305/55R20 does.
Tires in stock in 275/65R20
25 models, 29 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily.
| Tire | Type | Options | From |
|---|---|---|---|
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 2 | $440 |
| Nitto Recon Grappler A/T | All Terrain | 2 | $383 |
| Nitto Ridge Grappler | All Terrain | 2 | $404 |
| Toyo Open Country R/T Trail | All Terrain | 2 | $382 |
| AMP Off-Road Terrain Pro AT | All Terrain | 1 | $292 |
| BFGoodrich HD All Terrain KT | All Terrain | 1 | $466 |
| Bfgoodrich Mud-Terrain T/A KM3 | Mud Terrain | 1 | $465 |
| Falken Rubitrek A/T | All Terrain | 1 | $393 |
| Falken Wildpeak A/T4W | All Terrain | 1 | $457 |
| Falken Wildpeak R/T01 | All Terrain | 1 | $494 |
| Kenda AT2 | All Terrain | 1 | $373 |
| Kenda Klever M/T 2 | Mud Terrain | 1 | $372 |
| Mickey Thompson Baja Boss AT | All Terrain | 1 | $451 |
| Mickey Thompson Baja Legend EXP | All Terrain | 1 | $402 |
| Mickey Thompson Baja Legend MTZ | Mud Terrain | 1 | $426 |
| Nitto Terra Grappler G3 | All Terrain | 1 | $399 |
| Nitto Trail Grappler M/T | Mud Terrain | 1 | $448 |
| Toyo Celsius Cargo | All Terrain | 1 | $354 |
| Toyo Open Country A/T III | All Terrain | 1 | $441 |
| Toyo Open Country C/T | All Terrain | 1 | $457 |
| Toyo Open Country H/T II | All Terrain | 1 | $369 |
| Toyo Open Country M/T | Mud Terrain | 1 | $493 |
| Toyo Open Country R/T | All Terrain | 1 | $474 |
| Toyo Open Country R/T Pro | All Terrain | 1 | $491 |
| Venom Power Terra Hunter RT Plus | All Terrain | 1 | $290 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 275/65R20 tire in inches?+
A 275/65R20 is 34.07 inches tall and 10.83 inches wide, with a 7.04-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 275/65R20 a 34-inch tire?+
Close enough that everybody calls it one. It measures 34.1 inches, so it's sold and talked about as a 34. The flotation equivalent is 34.1x10.8R20.
What does 275/65R20 mean?+
275/65R20 means a tire 275 millimeters wide with a sidewall 65% as tall as it is wide, built for a 20-inch wheel.
275/65R20 vs 35x12.50R20: how much bigger?+
35x12.50R20 is 0.9 inches taller (2.7%) and 1.7 inches wider. Going from 275/65R20 to 35x12.50R20, a speedometer reading 65 mph means you're actually doing 66.8.
Looking for another size? See the full truck tire size chart.