215/70R17 tire size
215/70R17 is a metric size: 28.9" tall, 8.5" wide, on a 17" rim — about a 29x8.50R17. The sidewall is 5.9" and the tire turns 699 times per mile.
215/70R17 specs
| Overall diameter (height) | 28.85" · 733 mm |
|---|---|
| Section width | 8.46" · 215 mm |
| Sidewall height | 5.93" · 151 mm (70% of width) |
| Rim diameter | 17" |
| Circumference | 90.64" · 2.302 m |
| Revolutions per mile | 699 (434 per km) |
| Inch (flotation) equivalent | 29x8.50R17 |
Equivalent sizes on a 17" 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 | |
|---|---|---|---|---|---|
| 225/65R17 common | 28.52" | -1.16% | +10 mm | 59.3 mph | calculate → |
| 235/65R17 common | 29.03" | +0.61% | +20 mm | 60.4 mph | calculate → |
| 225/60R17 common | 27.63" | -4.23% | +10 mm | 57.5 mph | calculate → |
| 245/65R17 common | 29.54" | +2.39% | +30 mm | 61.4 mph | calculate → |
| 235/60R17 common | 28.10" | -2.59% | +20 mm | 58.4 mph | calculate → |
| 215/65R17 common | 28.00" | -2.93% | 0 mm | 58.2 mph | calculate → |
| 255/65R17 common | 30.05" | +4.16% | +40 mm | 62.5 mph | calculate → |
| 235/70R17 | 29.95" | +3.82% | +20 mm | 62.3 mph | calculate → |
| 255/60R17 | 29.05" | +0.68% | +40 mm | 60.4 mph | calculate → |
| 225/75R17 | 30.29" | +4.98% | +10 mm | 63.0 mph | calculate → |
| 275/55R17 | 28.91" | +0.20% | +60 mm | 60.1 mph | calculate → |
| 275/60R17 | 29.99" | +3.96% | +60 mm | 62.4 mph | calculate → |
| 245/55R17 | 27.61" | -4.30% | +30 mm | 57.4 mph | calculate → |
| 265/60R17 | 29.52" | +2.32% | +50 mm | 61.4 mph | calculate → |
| 165/90R17 | 28.69" | -0.55% | -50 mm | 59.7 mph | calculate → |
| 255/55R17 | 28.04" | -2.80% | +40 mm | 58.3 mph | calculate → |
| 155/90R17 | 27.98" | -3.00% | -60 mm | 58.2 mph | calculate → |
| 305/45R17 | 27.81" | -3.62% | +90 mm | 57.8 mph | calculate → |
| 175/90R17 | 29.40" | +1.91% | -40 mm | 61.1 mph | calculate → |
| 28x6.00R17 | 28.00" | -2.95% | -63 mm | 58.2 mph | calculate → |
| 275/50R17 | 27.83" | -3.55% | +60 mm | 57.9 mph | calculate → |
| 245/60R17 | 28.57" | -0.96% | +30 mm | 59.4 mph | calculate → |
| 225/70R17 | 29.40" | +1.91% | +10 mm | 61.1 mph | calculate → |
| 345/40R17 | 27.87" | -3.41% | +130 mm | 58.0 mph | calculate → |
| 205/65R17 | 27.49" | -4.71% | -10 mm | 57.2 mph | calculate → |
Plus / minus sizing: 16" and 18" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 235/60R18 common | 29.10" | +0.87% | +20 mm | 60.5 mph | calculate → |
| 225/60R18 common | 28.63" | -0.76% | +10 mm | 59.5 mph | calculate → |
| 255/55R18 common | 29.04" | +0.67% | +40 mm | 60.4 mph | calculate → |
| 235/70R16 common | 28.95" | +0.35% | +20 mm | 60.2 mph | calculate → |
| 245/55R18 | 28.61" | -0.83% | +30 mm | 59.5 mph | calculate → |
| 255/65R16 | 29.05" | +0.70% | +40 mm | 60.4 mph | calculate → |
| 155/90R18 | 28.98" | +0.46% | -60 mm | 60.3 mph | calculate → |
| 215/75R16 | 28.70" | -0.53% | 0 mm | 59.7 mph | calculate → |
| 305/45R18 | 28.81" | -0.15% | +90 mm | 59.9 mph | calculate → |
| 205/80R16 | 28.91" | +0.22% | -10 mm | 60.1 mph | calculate → |
| 275/60R16 | 28.99" | +0.49% | +60 mm | 60.3 mph | calculate → |
Try another size against 215/70R17
Questions
What size is 215/70R17 in inches?
215/70R17 is about 28.9" tall and 8.5" wide on a 17-inch rim — roughly a 29x8.50R17 in inch sizing.
What does 215/70R17 mean?
215 mm section width, sidewall 70% of the width (5.93"), radial construction, 17-inch rim.
What tire sizes are equivalent to 215/70R17?
On the same 17" rim, within 3% of the diameter: 275/55R17 (+0.20%), 165/90R17 (-0.55%), 235/65R17 (+0.61%), 255/60R17 (+0.68%), 245/60R17 (-0.96%), 225/65R17 (-1.16%).
How many revolutions per mile does a 215/70R17 tire make?
About 699 revolutions per mile (circumference 90.6").
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.