175/50R15 tire size
175/50R15 is a metric size: 21.9" tall, 6.9" wide, on a 15" rim — about a 22x7.00R15. The sidewall is 3.4" and the tire turns 921 times per mile.
175/50R15 specs
| Overall diameter (height) | 21.89" · 556 mm |
|---|---|
| Section width | 6.89" · 175 mm |
| Sidewall height | 3.44" · 88 mm (50% of width) |
| Rim diameter | 15" |
| Circumference | 68.77" · 1.747 m |
| Revolutions per mile | 921 (572 per km) |
| Inch (flotation) equivalent | 22x7.00R15 |
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 | |
|---|---|---|---|---|---|
| 195/50R15 | 22.68" | +3.60% | +20 mm | 62.2 mph | calculate → |
| 225/45R15 | 22.97" | +4.95% | +50 mm | 63.0 mph | calculate → |
| 245/40R15 | 22.72" | +3.78% | +70 mm | 62.3 mph | calculate → |
| 175/55R15 | 22.58" | +3.15% | 0 mm | 61.9 mph | calculate → |
| 155/60R15 | 22.32" | +1.98% | -20 mm | 61.2 mph | calculate → |
| 145/65R15 | 22.42" | +2.43% | -30 mm | 61.5 mph | calculate → |
| 195/45R15 | 21.91" | +0.09% | +20 mm | 60.1 mph | calculate → |
| 275/35R15 | 22.58" | +3.15% | +100 mm | 61.9 mph | calculate → |
| 165/60R15 | 22.80" | +4.14% | -10 mm | 62.5 mph | calculate → |
| 22x8.00R15 | 22.00" | +0.50% | +28 mm | 60.3 mph | calculate → |
| 165/50R15 | 21.50" | -1.80% | -10 mm | 58.9 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 | |
|---|---|---|---|---|---|
| 185/55R14 | 22.01" | +0.56% | +10 mm | 60.3 mph | calculate → |
| 215/35R16 | 21.93" | +0.16% | +40 mm | 60.1 mph | calculate → |
| 165/60R14 | 21.80" | -0.43% | -10 mm | 59.7 mph | calculate → |
| 205/50R14 | 22.07" | +0.83% | +30 mm | 60.5 mph | calculate → |
Try another size against 175/50R15
Questions
What size is 175/50R15 in inches?
175/50R15 is about 21.9" tall and 6.9" wide on a 15-inch rim — roughly a 22x7.00R15 in inch sizing.
What does 175/50R15 mean?
175 mm section width, sidewall 50% of the width (3.44"), radial construction, 15-inch rim.
What tire sizes are equivalent to 175/50R15?
On the same 15" rim, within 3% of the diameter: 195/45R15 (+0.09%), 22x8.00R15 (+0.50%), 165/50R15 (-1.80%), 155/60R15 (+1.98%), 145/65R15 (+2.43%), 175/55R15 (+3.15%).
How many revolutions per mile does a 175/50R15 tire make?
About 921 revolutions per mile (circumference 68.8").
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.