175/65R15 tire size
175/65R15 is a metric size: 24.0" tall, 6.9" wide, on a 15" rim — about a 24x7.00R15. The sidewall is 4.5" and the tire turns 842 times per mile.
175/65R15 specs
| Overall diameter (height) | 23.96" · 609 mm |
|---|---|
| Section width | 6.89" · 175 mm |
| Sidewall height | 4.48" · 114 mm (65% of width) |
| Rim diameter | 15" |
| Circumference | 75.26" · 1.912 m |
| Revolutions per mile | 842 (523 per km) |
| Inch (flotation) equivalent | 24x7.00R15 |
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 | |
|---|---|---|---|---|---|
| 195/65R15 common | 24.98" | +4.27% | +20 mm | 62.6 mph | compare → |
| 185/65R15 common | 24.47" | +2.14% | +10 mm | 61.3 mph | compare → |
| 185/60R15 common | 23.74" | -0.90% | +10 mm | 59.5 mph | compare → |
| 195/60R15 common | 24.21" | +1.07% | +20 mm | 60.6 mph | compare → |
| 205/50R15 | 23.07" | -3.70% | +30 mm | 57.8 mph | compare → |
| 195/55R15 | 23.44" | -2.14% | +20 mm | 58.7 mph | compare → |
| 205/60R15 | 24.69" | +3.04% | +30 mm | 61.8 mph | compare → |
| 185/55R15 | 23.01" | -3.94% | +10 mm | 57.6 mph | compare → |
| 225/45R15 | 22.97" | -4.11% | +50 mm | 57.5 mph | compare → |
| 225/50R15 | 23.86" | -0.41% | +50 mm | 59.8 mph | compare → |
| 205/55R15 | 23.88" | -0.33% | +30 mm | 59.8 mph | calculate → |
| 345/35R15 | 24.51" | +2.30% | +170 mm | 61.4 mph | calculate → |
| 245/50R15 | 24.65" | +2.88% | +70 mm | 61.7 mph | calculate → |
| 295/35R15 | 23.13" | -3.45% | +120 mm | 57.9 mph | calculate → |
| 165/60R15 | 22.80" | -4.85% | -10 mm | 57.1 mph | calculate → |
| 235/50R15 | 24.25" | +1.23% | +60 mm | 60.7 mph | calculate → |
| 165/65R15 | 23.44" | -2.14% | -10 mm | 58.7 mph | calculate → |
| 24.5x8.00R15 | 24.50" | +2.27% | +28 mm | 61.4 mph | calculate → |
| 175/60R15 | 23.27" | -2.88% | 0 mm | 58.3 mph | calculate → |
| 155/80R15 | 24.76" | +3.37% | -20 mm | 62.0 mph | calculate → |
| 215/50R15 | 23.46" | -2.05% | +40 mm | 58.8 mph | calculate → |
| 175/70R15 | 24.65" | +2.88% | 0 mm | 61.7 mph | calculate → |
| 225/55R15 | 24.74" | +3.29% | +50 mm | 62.0 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 | |
|---|---|---|---|---|---|
| 205/50R16 | 24.07" | +0.48% | +30 mm | 60.3 mph | compare → |
| 185/55R16 | 24.01" | +0.23% | +10 mm | 60.1 mph | compare → |
| 225/45R16 | 23.97" | +0.07% | +50 mm | 60.0 mph | calculate → |
| 215/60R14 | 24.16" | +0.84% | +40 mm | 60.5 mph | calculate → |
| 195/65R14 | 23.98" | +0.10% | +20 mm | 60.1 mph | calculate → |
Try another size against 175/65R15
Questions
What size is 175/65R15 in inches?
175/65R15 is about 24.0" tall and 6.9" wide on a 15-inch rim — roughly a 24x7.00R15 in inch sizing.
What does 175/65R15 mean?
175 mm section width, sidewall 65% of the width (4.48"), radial construction, 15-inch rim.
What tire sizes are equivalent to 175/65R15?
On the same 15" rim, within 3% of the diameter: 205/55R15 (-0.33%), 225/50R15 (-0.41%), 185/60R15 (-0.90%), 195/60R15 (+1.07%), 235/50R15 (+1.23%), 215/50R15 (-2.05%).
How many revolutions per mile does a 175/65R15 tire make?
About 842 revolutions per mile (circumference 75.3").
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.