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315/70R17 tire size in inches
315/70R17 is 34.36" tall and 12.40" wide, and fits a 17" rim. In flotation (inch) sizing that is roughly 34.4x12.4R17.
315/70R17 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 34.36" | 873 mm |
| Section width | 12.40" | 315 mm |
| Sidewall height | 8.68" | 220.5 mm |
| Rim diameter | 17" | 431.8 mm |
| Circumference | 108.0" | 2742 mm |
| Revolutions per mile | 587 | |
| Aspect ratio | 70% (sidewall is 70% of the width) | |
Drawn to scale
Among the 124 sizes for 17" wheels on this site, 315/70R17 is #102 by height (shortest: 205/40R17, tallest: 385/70R17).
What people compare 315/70R17 with
Real comparisons drivers search for, worked out against 315/70R17:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 285/70R17 | -1.65" (-4.8%) | -1.18" | -0.83" | 63 mph |
| 295/70R17 | -1.10" (-3.2%) | -0.79" | -0.55" | 62 mph |
| 285/75R17 | -0.53" (-1.54%) | -1.18" | -0.26" | 60.9 mph |
| 305/70R17 | -0.55" (-1.6%) | -0.39" | -0.27" | 61 mph |
| 265/70R17 | -2.75" (-8%) | -1.97" | -1.38" | 65.2 mph |
How the 315/70R17 numbers are worked out
The size code reads as 315 mm section width, 70% aspect ratio, R for radial construction and 17-inch wheel.
- Sidewall = 315 × 70% = 220.5 mm = 8.68"
- Diameter = 17" + 2 × 8.68" = 34.36"
- Circumference = π × 34.36" = 108.0"
- Revs per mile = 63,360" ÷ 108.0" = 587
Sizes that can replace 315/70R17 on a 17" wheel
Within 3% of 34.36". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 275/80R17 | 34.32" | 10.83" | -0.12% | 60.1 mph |
| 295/75R17 | 34.42" | 11.61" | +0.17% | 59.9 mph |
| 255/85R17 | 34.07" | 10.04" | -0.84% | 60.5 mph |
| 265/85R17 | 34.74" | 10.43" | +1.11% | 59.3 mph |
| 285/75R17 | 33.83" | 11.22" | -1.54% | 60.9 mph |
| 305/70R17 | 33.81" | 12.01" | -1.6% | 61 mph |
| 325/70R17 | 34.91" | 12.80" | +1.6% | 59.1 mph |
| 285/80R17 | 34.95" | 11.22" | +1.72% | 59 mph |
| 305/75R17 | 35.01" | 12.01" | +1.89% | 58.9 mph |
| 265/80R17 | 33.69" | 10.43" | -1.95% | 61.2 mph |
| 325/65R17 | 33.63" | 12.80" | -2.12% | 61.3 mph |
| 280/75R17 | 33.54" | 11.02" | -2.39% | 61.5 mph |
One size wider or narrower
- Narrower: 305/70R17 — 12.01" wide, 33.81" tall
- Wider: 325/70R17 — 12.80" wide, 34.91" tall
Same height on a different wheel size
- 325/75R15 15" (-0.49%)
- 275/85R16 16" (+0.15%)
- 295/80R16 16" (+0.64%)
- 315/75R16 16" (+0.7%)
- 305/75R16 16" (-1.02%)
- 285/80R16 16" (-1.19%)
- 325/70R16 16" (-1.31%)
- 265/85R16 16" (-1.8%)
- 295/70R18 18" (-0.29%)
- 275/75R18 18" (-0.35%)
Questions about 315/70R17
How tall is a 315/70R17 tire in inches?
A 315/70R17 tire is 34.36 inches (873 mm) tall: the 17-inch rim plus two sidewalls of 8.68 inches each.
Is 315/70R17 a 34 inch tire?
Yes. At 34.36 inches tall it is commonly called a 34-inch tire.
How many revolutions per mile does a 315/70R17 make?
About 587 revolutions per mile, based on a calculated circumference of 108.0 inches.
What size can replace 315/70R17?
275/80R17 is the closest match on a 17" rim (-0.12% height). Check load index, speed rating and clearance first.
Compare 315/70R17 against any other size with the tire size calculator.