275/70R18 Tire Size: 33.2" Tall, a 33-Inch Tire
Straight answer
A 275/70R18 stands 33.2 inches tall and 10.8 inches wide on a 18-inch wheel, which makes it a 33-inch tire in truck-speak. NTW stocks 27 tire models in this size right now.
275/70R18 dimensions
Overall diameter
33.16"
Section width
10.83"
Sidewall height
7.58"
Wheel diameter
18"
Circumference
104.2"
Revolutions per mile
608
≈ 33.2x10.8R18 flotation. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 275/70R18 means
- 275Section width: 275 mm (10.8") wall to wall
- 70Aspect ratio: sidewall is 70% of the width, so 7.6" tall
- RRadial construction
- 18Fits a 18-inch wheel
Want the full rundown on sidewall codes, load index, and speed rating? Read how to read a tire size.
275/70R18 compared to nearby 18-inch sizes
Speedometer column assumes your truck is calibrated for 275/70R18 and reads 65 mph.
| Size | Height | vs 275/70R18 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 275/65R18 | 32.1" | -1.1" (-3.3%) | 0.0" | 62.9 mph | Full comparison |
| 285/65R18 | 32.6" | -0.6" (-1.7%) | +0.4" | 63.9 mph | Full comparison |
| 265/70R18 | 32.6" | -0.6" (-1.7%) | -0.4" | 63.9 mph | Full comparison |
| 33x12.50R18 | 33.0" | -0.2" (-0.5%) | +1.7" | 64.7 mph | Full comparison |
| 295/70R18 | 34.3" | +1.1" (+3.3%) | +0.8" | 67.2 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 265/70R18 does.
Tires in stock in 275/70R18
27 models, 29 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily.
| Tire | Type | Options | From |
|---|---|---|---|
| Nitto Terra Grappler G3 | All Terrain | 2 | $305 |
| Toyo Open Country A/T III | All Terrain | 2 | $377 |
| AMP Off-Road Terrain Pro AT | All Terrain | 1 | $271 |
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 1 | $349 |
| BFGoodrich HD All Terrain KT | All Terrain | 1 | $366 |
| Bfgoodrich Mud-Terrain T/A KM3 | Mud Terrain | 1 | $375 |
| Cosmo Gripit_XT | All Terrain | 1 | $196 |
| Falken Rubitrek A/T | All Terrain | 1 | $333 |
| Falken Wildpeak A/T4W | All Terrain | 1 | $350 |
| Falken Wildpeak M/T | Mud Terrain | 1 | $432 |
| Falken Wildpeak R/T01 | All Terrain | 1 | $411 |
| Kenda Klever M/T 2 | Mud Terrain | 1 | $332 |
| Kenda Klever RT | All Terrain | 1 | $315 |
| Mickey Thompson Baja Boss AT | All Terrain | 1 | $358 |
| Mickey Thompson Baja Legend EXP | All Terrain | 1 | $329 |
| Mickey Thompson Baja Legend MTZ | Mud Terrain | 1 | $360 |
| Nitto EXO Grappler | All Terrain | 1 | $309 |
| Nitto Ridge Grappler | All Terrain | 1 | $360 |
| Nitto Trail Grappler M/T | Mud Terrain | 1 | $365 |
| Toyo M-55 | Commercial, On/Off-Road | 1 | $369 |
| Toyo Open Country C/T | All Terrain | 1 | $378 |
| Toyo Open Country H/T II | All Terrain | 1 | $288 |
| Toyo Open Country M/T | Mud Terrain | 1 | $425 |
| Toyo Open Country R/T | All Terrain | 1 | $405 |
| Toyo Open Country R/T Pro | All Terrain | 1 | $415 |
| Toyo Open Country R/T Trail | All Terrain | 1 | $388 |
| Venom Power Terra Hunter RT Plus | All Terrain | 1 | $267 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 275/70R18 tire in inches?+
A 275/70R18 is 33.16 inches tall and 10.83 inches wide, with a 7.58-inch sidewall on a 18-inch wheel. Real mounted tires vary a few tenths of an inch by brand, load range, and rim width.
Is 275/70R18 a 33-inch tire?+
Close enough that everybody calls it one. It measures 33.2 inches, so it's sold and talked about as a 33. The flotation equivalent is 33.2x10.8R18.
What does 275/70R18 mean?+
275/70R18 means a tire 275 millimeters wide with a sidewall 70% as tall as it is wide, built for a 18-inch wheel.
275/70R18 vs 295/70R18: how much bigger?+
295/70R18 is 1.1 inches taller (3.3%) and 0.8 inches wider. Going from 275/70R18 to 295/70R18, a speedometer reading 65 mph means you're actually doing 67.2.
Looking for another size? See the full truck tire size chart.