205/50R15 tire size
205/50R15 is a metric size: 23.1" tall, 8.1" wide, on a 15" rim — about a 23x8.00R15. The sidewall is 4.0" and the tire turns 874 times per mile.
205/50R15 specs
| Overall diameter (height) | 23.07" · 586 mm |
|---|---|
| Section width | 8.07" · 205 mm |
| Sidewall height | 4.04" · 102 mm (50% of width) |
| Rim diameter | 15" |
| Circumference | 72.48" · 1.841 m |
| Revolutions per mile | 874 (543 per km) |
| Inch (flotation) equivalent | 23x8.00R15 |
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 | |
|---|---|---|---|---|---|
| 185/60R15 common | 23.74" | +2.90% | -20 mm | 61.7 mph | compare → |
| 195/60R15 common | 24.21" | +4.95% | -10 mm | 63.0 mph | compare → |
| 175/65R15 | 23.96" | +3.84% | -30 mm | 62.3 mph | compare → |
| 185/55R15 | 23.01" | -0.26% | -20 mm | 59.8 mph | compare → |
| 195/55R15 | 23.44" | +1.62% | -10 mm | 61.0 mph | compare → |
| 225/45R15 | 22.97" | -0.43% | +20 mm | 59.7 mph | compare → |
| 195/50R15 | 22.68" | -1.71% | -10 mm | 59.0 mph | compare → |
| 225/50R15 | 23.86" | +3.41% | +20 mm | 62.0 mph | compare → |
| 245/40R15 | 22.72" | -1.54% | +40 mm | 59.1 mph | compare → |
| 175/55R15 | 22.58" | -2.13% | -30 mm | 58.7 mph | calculate → |
| 145/65R15 | 22.42" | -2.82% | -60 mm | 58.3 mph | calculate → |
| 155/60R15 | 22.32" | -3.24% | -50 mm | 58.1 mph | calculate → |
| 295/35R15 | 23.13" | +0.26% | +90 mm | 60.2 mph | calculate → |
| 165/60R15 | 22.80" | -1.19% | -40 mm | 59.3 mph | calculate → |
| 275/35R15 | 22.58" | -2.13% | +70 mm | 58.7 mph | calculate → |
| 205/55R15 | 23.88" | +3.50% | 0 mm | 62.1 mph | calculate → |
| 175/60R15 | 23.27" | +0.85% | -30 mm | 60.5 mph | calculate → |
| 165/65R15 | 23.44" | +1.62% | -40 mm | 61.0 mph | calculate → |
| 22x8.00R15 | 22.00" | -4.64% | -2 mm | 57.2 mph | calculate → |
| 215/50R15 | 23.46" | +1.71% | +10 mm | 61.0 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 | |
|---|---|---|---|---|---|
| 205/45R16 | 23.26" | +0.84% | 0 mm | 60.5 mph | compare → |
| 175/65R14 | 22.96" | -0.49% | -30 mm | 59.7 mph | compare → |
| 195/60R14 | 23.21" | +0.61% | -10 mm | 60.4 mph | compare → |
| 195/45R16 | 22.91" | -0.70% | -10 mm | 59.6 mph | calculate → |
| 205/55R14 | 22.88" | -0.84% | 0 mm | 59.5 mph | calculate → |
| 225/50R14 | 22.86" | -0.92% | +20 mm | 59.4 mph | calculate → |
| 185/50R16 | 23.28" | +0.92% | -20 mm | 60.6 mph | calculate → |
| 175/50R16 | 22.89" | -0.78% | -30 mm | 59.5 mph | calculate → |
Try another size against 205/50R15
Questions
What size is 205/50R15 in inches?
205/50R15 is about 23.1" tall and 8.1" wide on a 15-inch rim — roughly a 23x8.00R15 in inch sizing.
What does 205/50R15 mean?
205 mm section width, sidewall 50% of the width (4.04"), radial construction, 15-inch rim.
What tire sizes are equivalent to 205/50R15?
On the same 15" rim, within 3% of the diameter: 185/55R15 (-0.26%), 295/35R15 (+0.26%), 225/45R15 (-0.43%), 175/60R15 (+0.85%), 165/60R15 (-1.19%), 245/40R15 (-1.54%).
How many revolutions per mile does a 205/50R15 tire make?
About 874 revolutions per mile (circumference 72.5").
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.