205/70R15 tire size
205/70R15 is a metric size: 26.3" tall, 8.1" wide, on a 15" rim — about a 26.5x8.00R15. The sidewall is 5.6" and the tire turns 767 times per mile.
205/70R15 specs
| Overall diameter (height) | 26.30" · 668 mm |
|---|---|
| Section width | 8.07" · 205 mm |
| Sidewall height | 5.65" · 144 mm (70% of width) |
| Rim diameter | 15" |
| Circumference | 82.62" · 2.099 m |
| Revolutions per mile | 767 (477 per km) |
| Inch (flotation) equivalent | 26.5x8.00R15 |
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 | |
|---|---|---|---|---|---|
| 205/65R15 common | 25.49" | -3.07% | 0 mm | 58.2 mph | compare → |
| 215/70R15 | 26.85" | +2.10% | +10 mm | 61.3 mph | compare → |
| 225/70R15 | 27.40" | +4.19% | +20 mm | 62.5 mph | compare → |
| 215/65R15 | 26.00" | -1.12% | +10 mm | 59.3 mph | compare → |
| 215/60R15 | 25.16" | -4.34% | +10 mm | 57.4 mph | compare → |
| 205/75R15 | 27.11" | +3.07% | 0 mm | 61.8 mph | compare → |
| 235/60R15 | 26.10" | -0.75% | +30 mm | 59.6 mph | calculate → |
| 255/60R15 | 27.05" | +2.84% | +50 mm | 61.7 mph | calculate → |
| 275/50R15 | 25.83" | -1.80% | +70 mm | 58.9 mph | calculate → |
| 195/70R15 | 25.75" | -2.10% | -10 mm | 58.7 mph | calculate → |
| 245/60R15 | 26.57" | +1.05% | +40 mm | 60.6 mph | calculate → |
| 295/50R15 | 26.61" | +1.20% | +90 mm | 60.7 mph | calculate → |
| 225/60R15 | 25.63" | -2.54% | +20 mm | 58.5 mph | calculate → |
| 26x10.00R15 | 26.00" | -1.14% | +49 mm | 59.3 mph | calculate → |
| 26x8.50R15 | 26.00" | -1.14% | +11 mm | 59.3 mph | calculate → |
| 26x10.50R15 | 26.00" | -1.14% | +62 mm | 59.3 mph | calculate → |
| 26x12.00R15 | 26.00" | -1.14% | +100 mm | 59.3 mph | calculate → |
| 26x6.00R15 | 26.00" | -1.14% | -53 mm | 59.3 mph | calculate → |
| 26x7.50R15 | 26.00" | -1.14% | -14 mm | 59.3 mph | calculate → |
| 26x8.00R15 | 26.00" | -1.14% | -2 mm | 59.3 mph | calculate → |
| 27x9.50R15 | 27.00" | +2.66% | +36 mm | 61.6 mph | calculate → |
| 265/50R15 | 25.43" | -3.29% | +60 mm | 58.0 mph | calculate → |
| 185/70R15 | 25.20" | -4.19% | -20 mm | 57.5 mph | calculate → |
| 26x11.50R15 | 26.00" | -1.14% | +87 mm | 59.3 mph | calculate → |
| 185R15 | 26.94" | +2.46% | -20 mm | 61.5 mph | calculate → |
| 165R15 | 25.65" | -2.46% | -40 mm | 58.5 mph | calculate → |
| 27x10.50R15 | 27.00" | +2.66% | +62 mm | 61.6 mph | calculate → |
| 235/65R15 | 27.03" | +2.77% | +30 mm | 61.7 mph | calculate → |
| 165/80R15 | 25.39" | -3.44% | -40 mm | 57.9 mph | calculate → |
Plus / minus sizing: 14" and 16" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 215/60R16 common | 26.16" | -0.54% | +10 mm | 59.7 mph | compare → |
| 205/65R16 common | 26.49" | +0.73% | 0 mm | 60.4 mph | compare → |
| 205/75R14 | 26.11" | -0.73% | 0 mm | 59.6 mph | calculate → |
| 255/50R16 | 26.04" | -0.99% | +50 mm | 59.4 mph | calculate → |
| 145/90R16 | 26.28" | -0.09% | -60 mm | 59.9 mph | calculate → |
| 225/70R14 | 26.40" | +0.39% | +20 mm | 60.2 mph | calculate → |
| 235/55R16 | 26.18" | -0.46% | +30 mm | 59.7 mph | calculate → |
Try another size against 205/70R15
Questions
What size is 205/70R15 in inches?
205/70R15 is about 26.3" tall and 8.1" wide on a 15-inch rim — roughly a 26.5x8.00R15 in inch sizing.
What does 205/70R15 mean?
205 mm section width, sidewall 70% of the width (5.65"), radial construction, 15-inch rim.
What tire sizes are equivalent to 205/70R15?
On the same 15" rim, within 3% of the diameter: 235/60R15 (-0.75%), 245/60R15 (+1.05%), 215/65R15 (-1.12%), 26x10.50R15 (-1.14%), 26x10.00R15 (-1.14%), 26x11.50R15 (-1.14%).
How many revolutions per mile does a 205/70R15 tire make?
About 767 revolutions per mile (circumference 82.6").
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.