215/70R17.5 tire size
215/70R17.5 is a metric size: 29.4" tall, 8.5" wide, on a 17.5" rim — about a 29.5x8.50R17.5. The sidewall is 5.9" and the tire turns 687 times per mile.
215/70R17.5 specs
| Overall diameter (height) | 29.35" · 745 mm |
|---|---|
| Section width | 8.46" · 215 mm |
| Sidewall height | 5.93" · 151 mm (70% of width) |
| Rim diameter | 17.5" |
| Circumference | 92.21" · 2.342 m |
| Revolutions per mile | 687 (427 per km) |
| Inch (flotation) equivalent | 29.5x8.50R17.5 |
Equivalent sizes on a 17.5" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 215/75R17.5 | 30.20" | +2.88% | 0 mm | 61.7 mph | calculate → |
Try another size against 215/70R17.5
Questions
What size is 215/70R17.5 in inches?
215/70R17.5 is about 29.4" tall and 8.5" wide on a 17.5-inch rim — roughly a 29.5x8.50R17.5 in inch sizing.
What does 215/70R17.5 mean?
215 mm section width, sidewall 70% of the width (5.93"), radial construction, 17.5-inch rim.
What tire sizes are equivalent to 215/70R17.5?
On the same 17.5" rim, within 3% of the diameter: 215/75R17.5 (+2.88%).
How many revolutions per mile does a 215/70R17.5 tire make?
About 687 revolutions per mile (circumference 92.2").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.