315/70R17 Tire Size: 34.4" Tall, a 34-Inch Tire
Straight answer
A 315/70R17 stands 34.4 inches tall and 12.4 inches wide on a 17-inch wheel, which makes it a 34-inch tire in truck-speak. NTW stocks 24 tire models in this size right now.
315/70R17 dimensions
Overall diameter
34.36"
Section width
12.40"
Sidewall height
8.68"
Wheel diameter
17"
Circumference
108.0"
Revolutions per mile
587
≈ 34.4x12.4R17 flotation. Nominal math; real tires run a few tenths off depending on brand, load range, rim width, and air pressure.
What 315/70R17 means
- 315Section width: 315 mm (12.4") wall to wall
- 70Aspect ratio: sidewall is 70% of the width, so 8.7" tall
- RRadial construction
- 17Fits a 17-inch wheel
Want the full rundown on sidewall codes, load index, and speed rating? Read how to read a tire size.
315/70R17 compared to nearby 17-inch sizes
Speedometer column assumes your truck is calibrated for 315/70R17 and reads 65 mph.
| Size | Height | vs 315/70R17 | Width change | Actual speed | Compare |
|---|---|---|---|---|---|
| 285/70R17 | 32.7" | -1.7" (-4.8%) | -1.2" | 61.9 mph | Full comparison |
| 33x12.50R17 | 33.0" | -1.4" (-4.0%) | +0.1" | 62.4 mph | Full comparison |
| 295/70R17 | 33.3" | -1.1" (-3.2%) | -0.8" | 62.9 mph | Full comparison |
| 285/75R17 | 33.8" | -0.5" (-1.5%) | -1.2" | 64.0 mph | Full comparison |
| 35x12.50R17 | 35.0" | +0.6" (+1.9%) | +0.1" | 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 285/75R17 does.
Trucks that come with 315/70R17
- Ford Bronco (2021–2026) · Wildtrak / Sasquatch
- Jeep Wrangler (2018–2026) · Rubicon 392
Tires in stock in 315/70R17
24 models, 27 SKUs at NTW (different load ranges and sidewall styles). Refreshed daily.
| Tire | Type | Options | From |
|---|---|---|---|
| Bfgoodrich All-Terrain T/A KO3 | All Terrain | 2 | $380 |
| Toyo Open Country M/T | Mud Terrain | 2 | $396 |
| Toyo Open Country R/T Trail | All Terrain | 2 | $395 |
| AMP Off-Road AT Terrain Attack | All Terrain | 1 | $287 |
| AMP Off-Road Terrain Pro AT | All Terrain | 1 | $317 |
| BFGoodrich HD All Terrain KT | All Terrain | 1 | $419 |
| Bfgoodrich Mud-Terrain T/A KM3 | Mud Terrain | 1 | $418 |
| Falken Rubitrek A/T | All Terrain | 1 | $315 |
| Falken Wildpeak M/T | Mud Terrain | 1 | $433 |
| Falken Wildpeak R/T01 | All Terrain | 1 | $397 |
| Ironman MTX | All Terrain | 1 | $247 |
| Kenda AT2 | All Terrain | 1 | $330 |
| Kenda Klever AT | All Terrain | 1 | $212 |
| Kenda Klever M/T 2 | Mud Terrain | 1 | $388 |
| Mickey Thompson Baja Boss | Mud Terrain | 1 | $416 |
| Mickey Thompson Baja Boss AT | All Terrain | 1 | $388 |
| Mickey Thompson Baja Legend EXP | All Terrain | 1 | $360 |
| Mickey Thompson Baja Legend MTZ | Mud Terrain | 1 | $379 |
| Nitto Ridge Grappler | All Terrain | 1 | $392 |
| Nitto Terra Grappler G3 | All Terrain | 1 | $355 |
| Nitto Trail Grappler M/T | Mud Terrain | 1 | $407 |
| Toyo Open Country A/T III | All Terrain | 1 | $384 |
| Toyo Open Country R/T | All Terrain | 1 | $367 |
| Toyo Open Country R/T Pro | All Terrain | 1 | $437 |
Prices per tire at NTW when last checked; confirm at checkout.
Frequently Asked Questions
How tall is a 315/70R17 tire in inches?+
A 315/70R17 is 34.36 inches tall and 12.40 inches wide, with a 8.68-inch sidewall on a 17-inch wheel. Real mounted tires vary a few tenths of an inch by brand, load range, and rim width.
Is 315/70R17 a 34-inch tire?+
Close enough that everybody calls it one. It measures 34.4 inches, so it's sold and talked about as a 34. The flotation equivalent is 34.4x12.4R17.
What does 315/70R17 mean?+
315/70R17 means a tire 315 millimeters wide with a sidewall 70% as tall as it is wide, built for a 17-inch wheel.
315/70R17 vs 35x12.50R17: how much bigger?+
35x12.50R17 is 0.6 inches taller (1.9%) and 0.1 inches wider. Going from 315/70R17 to 35x12.50R17, a speedometer reading 65 mph means you're actually doing 66.2.
Looking for another size? See the full truck tire size chart.