215/50R15 tire size
215/50R15 is a metric size: 23.5" tall, 8.5" wide, on a 15" rim — about a 23.5x8.50R15. The sidewall is 4.2" and the tire turns 860 times per mile.
215/50R15 specs
| Overall diameter (height) | 23.46" · 596 mm |
|---|---|
| Section width | 8.46" · 215 mm |
| Sidewall height | 4.23" · 108 mm (50% of width) |
| Rim diameter | 15" |
| Circumference | 73.72" · 1.872 m |
| Revolutions per mile | 860 (534 per km) |
| Inch (flotation) equivalent | 23.5x8.50R15 |
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 | |
|---|---|---|---|---|---|
| 185/65R15 common | 24.47" | +4.28% | -30 mm | 62.6 mph | calculate → |
| 185/60R15 common | 23.74" | +1.17% | -30 mm | 60.7 mph | calculate → |
| 195/60R15 common | 24.21" | +3.19% | -20 mm | 61.9 mph | calculate → |
| 175/65R15 | 23.96" | +2.10% | -40 mm | 61.3 mph | calculate → |
| 205/50R15 | 23.07" | -1.68% | -10 mm | 59.0 mph | calculate → |
| 195/55R15 | 23.44" | -0.08% | -20 mm | 59.9 mph | calculate → |
| 185/55R15 | 23.01" | -1.93% | -30 mm | 58.8 mph | calculate → |
| 225/45R15 | 22.97" | -2.10% | +10 mm | 58.7 mph | calculate → |
| 195/50R15 | 22.68" | -3.36% | -20 mm | 58.0 mph | calculate → |
| 225/50R15 | 23.86" | +1.68% | +10 mm | 61.0 mph | calculate → |
| 245/40R15 | 22.72" | -3.19% | +30 mm | 58.1 mph | calculate → |
| 175/55R15 | 22.58" | -3.78% | -40 mm | 57.7 mph | calculate → |
| 145/65R15 | 22.42" | -4.45% | -70 mm | 57.3 mph | calculate → |
| 155/60R15 | 22.32" | -4.87% | -60 mm | 57.1 mph | calculate → |
| 295/35R15 | 23.13" | -1.43% | +80 mm | 59.1 mph | calculate → |
| 205/55R15 | 23.88" | +1.76% | -10 mm | 61.1 mph | calculate → |
| 165/60R15 | 22.80" | -2.85% | -50 mm | 58.3 mph | calculate → |
| 275/35R15 | 22.58" | -3.78% | +60 mm | 57.7 mph | calculate → |
| 345/35R15 | 24.51" | +4.45% | +130 mm | 62.7 mph | calculate → |
| 165/65R15 | 23.44" | -0.08% | -50 mm | 59.9 mph | calculate → |
| 175/60R15 | 23.27" | -0.84% | -40 mm | 59.5 mph | calculate → |
| 235/50R15 | 24.25" | +3.36% | +20 mm | 62.0 mph | calculate → |
| 24.5x8.00R15 | 24.50" | +4.41% | -12 mm | 62.6 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 | |
|---|---|---|---|---|---|
| 185/65R14 | 23.47" | +0.02% | -30 mm | 60.0 mph | calculate → |
| 195/50R16 | 23.68" | +0.91% | -20 mm | 60.5 mph | calculate → |
| 205/45R16 | 23.26" | -0.86% | -10 mm | 59.5 mph | calculate → |
| 175/70R14 | 23.65" | +0.77% | -40 mm | 60.5 mph | calculate → |
| 215/45R16 | 23.62" | +0.65% | 0 mm | 60.4 mph | calculate → |
| 175/55R16 | 23.58" | +0.49% | -40 mm | 60.3 mph | calculate → |
| 185/50R16 | 23.28" | -0.77% | -30 mm | 59.5 mph | calculate → |
| 205/60R14 | 23.69" | +0.94% | -10 mm | 60.6 mph | calculate → |
Try another size against 215/50R15
Questions
What size is 215/50R15 in inches?
215/50R15 is about 23.5" tall and 8.5" wide on a 15-inch rim — roughly a 23.5x8.50R15 in inch sizing.
What does 215/50R15 mean?
215 mm section width, sidewall 50% of the width (4.23"), radial construction, 15-inch rim.
What tire sizes are equivalent to 215/50R15?
On the same 15" rim, within 3% of the diameter: 165/65R15 (-0.08%), 195/55R15 (-0.08%), 175/60R15 (-0.84%), 185/60R15 (+1.17%), 295/35R15 (-1.43%), 225/50R15 (+1.68%).
How many revolutions per mile does a 215/50R15 tire make?
About 860 revolutions per mile (circumference 73.7").
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.