195/45R17 tire size
195/45R17 is a metric size: 23.9" tall, 7.7" wide, on a 17" rim — about a 24x7.50R17. The sidewall is 3.5" and the tire turns 844 times per mile.
195/45R17 specs
| Overall diameter (height) | 23.91" · 607 mm |
|---|---|
| Section width | 7.68" · 195 mm |
| Sidewall height | 3.45" · 88 mm (45% of width) |
| Rim diameter | 17" |
| Circumference | 75.11" · 1.908 m |
| Revolutions per mile | 844 (524 per km) |
| Inch (flotation) equivalent | 24x7.50R17 |
Equivalent sizes on a 17" 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 | |
|---|---|---|---|---|---|
| 225/45R17 common | 24.97" | +4.45% | +30 mm | 62.7 mph | calculate → |
| 215/45R17 common | 24.62" | +2.96% | +20 mm | 61.8 mph | calculate → |
| 205/50R17 common | 25.07" | +4.86% | +10 mm | 62.9 mph | calculate → |
| 205/45R17 common | 24.26" | +1.48% | +10 mm | 60.9 mph | calculate → |
| 245/40R17 common | 24.72" | +3.38% | +50 mm | 62.0 mph | calculate → |
| 255/40R17 common | 25.03" | +4.69% | +60 mm | 62.8 mph | calculate → |
| 205/40R17 | 23.46" | -1.89% | +10 mm | 58.9 mph | calculate → |
| 235/40R17 | 24.40" | +2.06% | +40 mm | 61.2 mph | calculate → |
| 215/40R17 | 23.77" | -0.58% | +20 mm | 59.7 mph | calculate → |
| 275/35R17 | 24.58" | +2.80% | +80 mm | 61.7 mph | calculate → |
| 225/40R17 | 24.09" | +0.74% | +30 mm | 60.4 mph | calculate → |
| 245/35R17 | 23.75" | -0.66% | +50 mm | 59.6 mph | calculate → |
| 195/40R17 | 23.14" | -3.21% | 0 mm | 58.1 mph | calculate → |
| 145/70R17 | 24.99" | +4.53% | -50 mm | 62.7 mph | calculate → |
| 225/35R17 | 23.20" | -2.96% | +30 mm | 58.2 mph | calculate → |
| 215/35R17 | 22.93" | -4.12% | +20 mm | 57.5 mph | calculate → |
Plus / minus sizing: 16" and 18" 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" | +0.68% | +10 mm | 60.4 mph | calculate → |
| 195/50R16 | 23.68" | -0.97% | 0 mm | 59.4 mph | calculate → |
| 185/55R16 | 24.01" | +0.43% | -10 mm | 60.3 mph | calculate → |
| 215/35R18 | 23.93" | +0.07% | +20 mm | 60.0 mph | calculate → |
| 225/45R16 | 23.97" | +0.26% | +30 mm | 60.2 mph | calculate → |
Try another size against 195/45R17
Questions
What size is 195/45R17 in inches?
195/45R17 is about 23.9" tall and 7.7" wide on a 17-inch rim — roughly a 24x7.50R17 in inch sizing.
What does 195/45R17 mean?
195 mm section width, sidewall 45% of the width (3.45"), radial construction, 17-inch rim.
What tire sizes are equivalent to 195/45R17?
On the same 17" rim, within 3% of the diameter: 215/40R17 (-0.58%), 245/35R17 (-0.66%), 225/40R17 (+0.74%), 205/45R17 (+1.48%), 205/40R17 (-1.89%), 235/40R17 (+2.06%).
How many revolutions per mile does a 195/45R17 tire make?
About 844 revolutions per mile (circumference 75.1").
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.