315/70R17 tire size
315/70R17 (listed here under light-truck & off-road sizes) is 34.36 in tall and 12.40 in wide, with a 8.68 in sidewall, and is made for a 17-inch wheel.
| Measurement | Imperial | Metric |
|---|---|---|
| Overall diameter (height) | 34.36 in | 873 mm |
| Section width | 12.40 in | 315 mm |
| Sidewall height | 8.68 in | 220 mm |
| Rim (wheel) diameter | 17 in | 432 mm |
| Aspect ratio | 70% | — |
| Circumference | 108.0 in | 2742 mm |
| Revolutions | 587 per mile | 365 per km |
Compare 315/70R17 with any other size →
315/70R17 in inches
315/70R17 is 34.36 × 12.40 in on a 17-inch rim — roughly 34.5x12.50R17 in inch (flotation) terms.
Other metric sizes on a 17-inch rim within ±3% of its diameter:
| Size | Diameter | Width | vs original |
|---|---|---|---|
| 295/75R17 | 34.42 in | 11.61 in | +0.17% |
| 275/80R17 | 34.32 in | 10.83 in | −0.11% |
| 335/65R17 | 34.15 in | 13.19 in | −0.63% |
| 345/65R17 | 34.66 in | 13.58 in | +0.86% |
| 325/70R17 | 34.91 in | 12.80 in | +1.60% |
| 305/70R17 | 33.81 in | 12.01 in | −1.60% |
| 285/75R17 | 33.83 in | 11.22 in | −1.55% |
| 305/75R17 | 35.01 in | 12.01 in | +1.89% |
| 285/80R17 | 34.95 in | 11.22 in | +1.72% |
| 355/60R17 | 33.77 in | 13.98 in | −1.72% |
Computed combinations of standard widths and aspect ratios; not every size is manufactured. A similar diameter does not mean a size fits or is approved for your vehicle.
Sizes on other wheels with nearly the same height
From our size pages, these stay within ±3% of 315/70R17's diameter:
Height difference to other sizes on this site
| Other size | Height difference | True speed at 60 mph indicated | Diameter vs ±3% rule of thumb |
|---|---|---|---|
| 275/65R20 | −0.29 in (−0.8%) | 59.5 mph | inside |
| 35x12.50R17 | +0.64 in (+1.9%) | 61.1 mph | inside |
| 275/70R18 | −1.20 in (−3.5%) | 57.9 mph | outside |
| 33x12.50R17 | −1.36 in (−4.0%) | 57.6 mph | outside |
| 275/60R20 | −1.37 in (−4.0%) | 57.6 mph | outside |
| 285/75R16 | −1.53 in (−4.5%) | 57.3 mph | outside |
Speeds assume the speedometer was accurate on 315/70R17.
Geometry only: this does not confirm that a size fits, is approved for or is safe on a particular vehicle. Wheel width and offset, suspension, clearances, load index, speed rating, the vehicle maker's specification and local regulations all apply — check with your owner's manual and a qualified tire professional.
Detailed comparisons
Frequently asked questions
How tall is a 315/70R17 tire?
34.36 inches (873 mm) in nominal overall diameter. Measured height varies slightly by brand and model and decreases as the tread wears.
What is 315/70R17 in inches?
About 34.4 × 12.4 in on a 17-inch wheel, which in inch (flotation) notation is roughly 34.5x12.50R17.
How tall is 315/70R17 in whole inches?
34.36 in, which rounds to 34 in. Tire sellers and owners sometimes round sizes differently, and measured heights vary by model.
How many revolutions per mile does a 315/70R17 make?
About 587 revolutions per mile (365 per km) from its nominal circumference of 108.0 in. Manufacturer-measured values are slightly higher because the loaded tire deflects.
Nominal dimensions computed from the size code; see methodology. Always confirm load index, speed rating and fitment for your vehicle.
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