215/75R15 tire size
215/75R15 is a metric size: 27.7" tall, 8.5" wide, on a 15" rim — about a 27.5x8.50R15. The sidewall is 6.3" and the tire turns 728 times per mile.
215/75R15 specs
| Overall diameter (height) | 27.70" · 704 mm |
|---|---|
| Section width | 8.46" · 215 mm |
| Sidewall height | 6.35" · 161 mm (75% of width) |
| Rim diameter | 15" |
| Circumference | 87.01" · 2.210 m |
| Revolutions per mile | 728 (452 per km) |
| Inch (flotation) equivalent | 27.5x8.50R15 |
Equivalent sizes on a 15" 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 | |
|---|---|---|---|---|---|
| 235/75R15 common | 28.88" | +4.26% | +20 mm | 62.6 mph | compare → |
| 215/70R15 | 26.85" | -3.06% | 0 mm | 58.2 mph | compare → |
| 225/70R15 | 27.40" | -1.07% | +10 mm | 59.4 mph | compare → |
| 225/75R15 | 28.29" | +2.13% | +10 mm | 61.3 mph | compare → |
| 235/70R15 | 27.95" | +0.92% | +20 mm | 60.6 mph | compare → |
| 205/75R15 | 27.11" | -2.13% | -10 mm | 58.7 mph | compare → |
| 255/70R15 | 29.06" | +4.90% | +40 mm | 62.9 mph | calculate → |
| 275/60R15 | 27.99" | +1.07% | +60 mm | 60.6 mph | calculate → |
| 255/60R15 | 27.05" | -2.35% | +40 mm | 58.6 mph | calculate → |
| 295/50R15 | 26.61" | -3.91% | +80 mm | 57.7 mph | calculate → |
| 245/60R15 | 26.57" | -4.05% | +30 mm | 57.6 mph | calculate → |
| 325/50R15 | 27.80" | +0.36% | +110 mm | 60.2 mph | calculate → |
| 29x10.50R15 | 29.00" | +4.71% | +52 mm | 62.8 mph | calculate → |
| 295/55R15 | 27.78" | +0.28% | +80 mm | 60.2 mph | calculate → |
| 28x10.50R15 | 28.00" | +1.09% | +52 mm | 60.7 mph | calculate → |
| 28x11.50R15 | 28.00" | +1.09% | +77 mm | 60.7 mph | calculate → |
| 28x9.00R15 | 28.00" | +1.09% | +14 mm | 60.7 mph | calculate → |
| 28x10.00R15 | 28.00" | +1.09% | +39 mm | 60.7 mph | calculate → |
| 28x12.00R15 | 28.00" | +1.09% | +90 mm | 60.7 mph | calculate → |
| 28x6.00R15 | 28.00" | +1.09% | -63 mm | 60.7 mph | calculate → |
| 28x7.50R15 | 28.00" | +1.09% | -24 mm | 60.7 mph | calculate → |
| 27x9.50R15 | 27.00" | -2.52% | +26 mm | 58.5 mph | calculate → |
| 29x11.50R15 | 29.00" | +4.71% | +77 mm | 62.8 mph | calculate → |
| 29x15.00R15 | 29.00" | +4.71% | +166 mm | 62.8 mph | calculate → |
| 29x18.00R15 | 29.00" | +4.71% | +242 mm | 62.8 mph | calculate → |
| 29x8.50R15 | 29.00" | +4.71% | +1 mm | 62.8 mph | calculate → |
| 28x12.50R15 | 28.00" | +1.09% | +103 mm | 60.7 mph | calculate → |
| 28x13.50R15 | 28.00" | +1.09% | +128 mm | 60.7 mph | calculate → |
| 255/65R15 | 28.05" | +1.28% | +40 mm | 60.8 mph | calculate → |
| 235/65R15 | 27.03" | -2.42% | +20 mm | 58.6 mph | calculate → |
| 27x10.50R15 | 27.00" | -2.52% | +52 mm | 58.5 mph | calculate → |
| 185R15 | 26.94" | -2.71% | -30 mm | 58.4 mph | calculate → |
| 245/70R15 | 28.50" | +2.91% | +30 mm | 61.7 mph | calculate → |
| 29x12.50R15 | 29.00" | +4.71% | +103 mm | 62.8 mph | calculate → |
| 29x15.50R15 | 29.00" | +4.71% | +179 mm | 62.8 mph | calculate → |
| 29x18.50R15 | 29.00" | +4.71% | +255 mm | 62.8 mph | calculate → |
Plus / minus sizing: 14" and 16" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
Try another size against 215/75R15
Questions
What size is 215/75R15 in inches?
215/75R15 is about 27.7" tall and 8.5" wide on a 15-inch rim — roughly a 27.5x8.50R15 in inch sizing.
What does 215/75R15 mean?
215 mm section width, sidewall 75% of the width (6.35"), radial construction, 15-inch rim.
What tire sizes are equivalent to 215/75R15?
On the same 15" rim, within 3% of the diameter: 295/55R15 (+0.28%), 325/50R15 (+0.36%), 235/70R15 (+0.92%), 225/70R15 (-1.07%), 275/60R15 (+1.07%), 28x10.50R15 (+1.09%).
How many revolutions per mile does a 215/75R15 tire make?
About 728 revolutions per mile (circumference 87.0").
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.