315/70R17 tire size
A 315/70R17 tire is 34.4 inches tall and 12.4 inches wide. Here are its full dimensions, what the numbers mean, and the sizes you can swap it for.
- Overall diameter
- 34.36″ (873 mm)
- Section width
- 12.40″ (315 mm)
- Sidewall height
- 8.68″ (221 mm)
- Wheel diameter
- 17″
- Circumference
- 108.0″
- Revolutions per mile
- 587
What 315/70R17 means
- 315: the tire is 315 mm (12.4 in) wide from sidewall to sidewall.
- 70: the sidewall is 70% of the width, 220.5 mm (8.68 in) tall.
- R: radial construction, used by almost every modern tire.
- 17: it fits a 17-inch wheel.
Overall diameter = 17 + 2 × 8.68 = 34.36 inches.
Sizes equivalent to 315/70R17
These sizes are within 3% of the overall diameter, the usual limit for swapping without speedometer problems.
| Size | Diameter | Difference | Speedometer at 60 mph |
|---|---|---|---|
| 325/60R19 | 34.4″ | -0.0% | 60.0 mph actual |
| 295/75R17 | 34.4″ | +0.2% | 60.1 mph actual |
| 295/70R18 | 34.3″ | -0.3% | 59.8 mph actual |
| 335/65R17 | 34.1″ | -0.6% | 59.6 mph actual |
| 315/65R18 | 34.1″ | -0.7% | 59.6 mph actual |
| 305/65R19 | 34.6″ | +0.7% | 60.4 mph actual |
| 295/65R19 | 34.1″ | -0.8% | 59.5 mph actual |
| 325/65R18 | 34.6″ | +0.8% | 60.5 mph actual |
| 305/70R18 | 34.8″ | +1.3% | 60.8 mph actual |
| 335/60R19 | 34.8″ | +1.4% | 60.8 mph actual |
See every common size side by side in the tire size chart.
Questions
What is 315/70R17 in inches?
A 315/70R17 tire is about 34.4 inches tall (873 mm) and 12.4 inches wide, on a 17-inch wheel. In flotation sizing that's roughly 34.4x12.4R17.
How tall is a 315/70R17 tire?
The overall diameter is 34.36 inches: the 17-inch wheel plus two 8.68-inch sidewalls. Actual tires vary by a few tenths of an inch between brands and models.
How many revolutions per mile does a 315/70R17 make?
About 587 revolutions per mile, from a circumference of 108.0 inches.
