tireheight.com315/70R17 in inches
A 315/70R17 tire is 34.4″ tall and 12.4″ wide, and fits a 17″ wheel. In inches it is written 34.4×12.4R17.
How tall 315/70R17 tires really are
Heights published by BFGoodrich, General, Mickey Thompson and Toyo for all 17 tires in this size. Their published revolutions per mile work out to 33.3–33.6″ under load (below).
Real 315/70R17 tires measure 34.40–34.65″, against 34.36″ from the size code. Every one runs taller than the size code.
- Toyo Open Country M/T · 234.65″ +0.28″
- Mickey Thompson Baja Boss M/T34.60″ +0.24″
- Mickey Thompson Baja Legend EXP34.60″ +0.24″
- Mickey Thompson Baja Legend MTZ34.60″ +0.24″
- Mickey Thompson Baja Boss A/T34.50″ +0.14″
- Toyo Open Country A/T III34.41″ +0.05″
- Toyo Open Country R/T Trail34.41″ +0.05″
- BFGoodrich All-Terrain T/A KO2 · 234.40″ +0.04″
- BFGoodrich All-Terrain T/A KO3 · 234.40″ +0.04″
- BFGoodrich HD-Terrain T/A KT34.40″ +0.04″
- BFGoodrich Mud-Terrain T/A KM334.40″ +0.04″
- General Grabber A/TX34.40″ +0.04″
- General Grabber X334.40″ +0.04″
- Toyo Open Country R/T Pro34.40″ +0.04″
Published revs per mile (600–605) mean the tire rolls like a 33.3–33.6″ tire on the vehicle. Use this for speedometer calibration.
The lightest (General Grabber A/TX, LT E) is 16.0 lb lighter per corner than the heaviest (Toyo Open Country M/T, LT E).
17 tires in 315/70R17
Sort by the spec you care about.
| Load | Revs/mi | Source | |||||
|---|---|---|---|---|---|---|---|
| General Grabber A/TXAll-terrain | LT E · 121S | 34.40 | 61.5 | 16.0 | 3,195 | 605 | Spec page |
| Mickey Thompson Baja Legend EXPAll-terrain | LT D · 121Q | 34.60 | 62.0 | 18.5 | 3,195 | – | Spec page |
| BFGoodrich All-Terrain T/A KO2All-terrain | LT C · 113S | 34.40 | 62.6 | 15.0 | 2,535 | 604 | Spec page |
| BFGoodrich All-Terrain T/A KO2All-terrain | LT C · 113T | 34.40 | 63.0 | 15.0 | 2,535 | 604 | Spec page |
| BFGoodrich All-Terrain T/A KO3All-terrain | LT D · 121S | 34.40 | 65.1 | 15.0 | 3,195 | 604 | Spec page |
| Toyo Open Country A/T IIIAll-terrain | LT D · 121/118S | 34.41 | 66.6 | 16.9 | 3,195 | 604 | Spec page |
| Mickey Thompson Baja Legend MTZMud-terrain | LT E · 121Q | 34.60 | 67.0 | 21.0 | 3,195 | – | Spec page |
| Toyo Open Country R/T ProRugged-terrain | LT E · 126/123Q | 34.40 | 67.0 | 17.1 | 3,750 | 604 | Spec page |
| Toyo Open Country R/T TrailRugged-terrain | LT D · 121/118S | 34.41 | 67.8 | 16.9 | 3,195 | 604 | Spec page |
| BFGoodrich All-Terrain T/A KO3All-terrain | LT F · 128S | 34.40 | 69.3 | 16.0 | 3,970 | 604 | Spec page |
| General Grabber X3Mud-terrain | LT E · 121Q | 34.40 | 69.6 | 19.0 | 3,195 | 605 | Spec page |
| Mickey Thompson Baja Boss M/TMud-terrain | LT E · 121Q | 34.60 | 70.0 | 21.0 | 3,195 | – | Spec page |
| Mickey Thompson Baja Boss A/TAll-terrain | LT E · 121Q | 34.50 | 71.0 | 18.5 | 3,195 | – | Spec page |
| BFGoodrich HD-Terrain T/A KT | LT F · 128Q | 34.40 | 72.0 | 18.0 | 3,970 | 604 | Spec page |
| BFGoodrich Mud-Terrain T/A KM3Mud-terrain | LT E · 121Q | 34.40 | 72.3 | 18.0 | 3,195 | 604 | Spec page |
| Toyo Open Country M/TMud-terrain | LT C · 113/110Q | 34.65 | 76.3 | 20.2 | 2,535 | 600 | Spec page |
| Toyo Open Country M/TMud-terrain | LT E · 121/118Q | 34.65 | 77.5 | 20.2 | 3,195 | 600 | Spec page |
Is 315/70R17 a 34-inch tire?
Close. The size code works out to 34.36″, and the 17 tires here publish 34.40–34.65″, so people call it a 34.
All 34-inch tire sizes, on every wheel size.
A true 34×10.50R17 is 0.36″ shorter on paper and 1.9″ narrower.
Compare with nearby sizes
Differences in overall diameter, calculated from each size code.
| Size | Diameter ″ | vs 315/70R17 | Difference |
|---|---|---|---|
| 305/70R17 | 33.81 | -0.55″ | -1.6% |
| 285/75R17 | 33.83 | -0.53″ | -1.5% |
| 34×10.50R17 | 34.00 | -0.36″ | -1.1% |
| 255/85R17 | 34.07 | -0.30″ | -0.9% |
| 295/70R18 | 34.26 | -0.10″ | -0.3% |
| 295/75R17 | 34.42 | +0.06″ | +0.2% |
| 315/75R16 | 34.60 | +0.24″ | +0.7% |
| 35×10.50R17 | 35.00 | +0.64″ | +1.9% |
| 35×11.50R17 | 35.00 | +0.64″ | +1.9% |
| 35×12.50R17 | 35.00 | +0.64″ | +1.9% |
How to read 315/70R17
Marks a light truck (LT) tire.
A percentage, not a measurement: the sidewall is 70% as tall as the tire is wide, which is 220.5 mm or 8.68 inches.
Radial construction.
Mounts on a 17-inch wheel. Approved wheel widths run 8.0″ to 11.0″.
Each tire carries up to 3,195 lb (1,450 kg) at its maximum pressure.
Rated for up to 99 mph sustained.
Printed separately as "LOAD RANGE E": a 10-ply rating, inflated up to 80 psi (standard load-range table). The load range E tires here carry up to 3,750 lb each, as published.
| Specification | Inches | Metric |
|---|---|---|
| Overall diameter | 34.36 | 873 mm |
| Section width | 12.40 | 315 mm |
| Sidewall height | 8.68 | 220.5 mm |
| Circumference | 108.0 | 2,742 mm |
| Revolutions per mile (calculated, unloaded) | 586.9 | 365 per km |
| Revolutions per mile (published by manufacturers) | 600–605 | 373–376 per km |
| Approved wheel width | 8.0–11.0 | 203–279 mm |
Speedometer error after switching to 315/70R17
Questions about 315/70R17
What is 315/70R17 in inches?
34.36 inches tall, 12.40 inches wide, on a 17-inch wheel. Written in inches, that is roughly 34.4×12.4R17.
How much does a 315/70R17 tire weigh?
Between 61.5 lb and 77.5 lb for the 17 tires listed here. The lightest is the General Grabber A/TX (LT E); the heaviest is the Toyo Open Country M/T (LT E).
What wheel width do I need for 315/70R17?
Manufacturers approve 8.0–11.0″ wide wheels for this size.
How many revolutions per mile does a 315/70R17 make?
Published figures run 600–605 revolutions per mile. The calculated figure is 586.9, but manufacturers measure the tire under load, where it rolls on a smaller radius.
How much taller is 315/70R17 than 255/85R17?
0.30 inches taller on paper (34.36″ vs 34.07″), which raises the axle about 0.15″. Your speedometer will read about 0.9% slow.