245/75R17 tire size
245/75R17 is a metric size: 31.5" tall, 9.6" wide, on a 17" rim — about a 31.5x9.50R17. The sidewall is 7.2" and the tire turns 641 times per mile.
245/75R17 specs
| Overall diameter (height) | 31.47" · 799 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 7.23" · 184 mm (75% of width) |
| Rim diameter | 17" |
| Circumference | 98.86" · 2.511 m |
| Revolutions per mile | 641 (398 per km) |
| Inch (flotation) equivalent | 31.5x9.50R17 |
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 | |
|---|---|---|---|---|---|
| 265/70R17 common | 31.61" | +0.44% | +20 mm | 60.3 mph | compare → |
| 245/70R17 common | 30.50" | -3.07% | 0 mm | 58.2 mph | compare → |
| 285/70R17 common | 32.71" | +3.94% | +40 mm | 62.4 mph | compare → |
| 265/65R17 common | 30.56" | -2.88% | +20 mm | 58.3 mph | compare → |
| 235/80R17 common | 31.80" | +1.06% | -10 mm | 60.6 mph | compare → |
| 255/65R17 common | 30.05" | -4.50% | +10 mm | 57.3 mph | compare → |
| 255/70R17 common | 31.06" | -1.31% | +10 mm | 59.2 mph | compare → |
| 255/75R17 | 32.06" | +1.88% | +10 mm | 61.1 mph | compare → |
| 235/75R17 | 30.88" | -1.88% | -10 mm | 58.9 mph | compare → |
| 33x12.50R17 | 33.00" | +4.87% | +73 mm | 62.9 mph | compare → |
| 275/70R17 | 32.16" | +2.19% | +30 mm | 61.3 mph | compare → |
| 235/70R17 | 29.95" | -4.82% | -10 mm | 57.1 mph | compare → |
| 305/65R17 | 32.61" | +3.63% | +60 mm | 62.2 mph | compare → |
| 225/75R17 | 30.29" | -3.75% | -20 mm | 57.7 mph | compare → |
| 275/60R17 | 29.99" | -4.69% | +30 mm | 57.2 mph | calculate → |
| 275/65R17 | 31.07" | -1.25% | +30 mm | 59.2 mph | calculate → |
| 285/65R17 | 31.59" | +0.38% | +40 mm | 60.2 mph | calculate → |
| 315/60R17 | 31.88" | +1.31% | +70 mm | 60.8 mph | calculate → |
| 31x10.50R17 | 31.00" | -1.49% | +22 mm | 59.1 mph | calculate → |
| 32x11.50R17 | 32.00" | +1.69% | +47 mm | 61.0 mph | calculate → |
| 315/55R17 | 30.64" | -2.63% | +70 mm | 58.4 mph | calculate → |
| 33x10.50R17 | 33.00" | +4.87% | +22 mm | 62.9 mph | calculate → |
| 33x11.50R17 | 33.00" | +4.87% | +47 mm | 62.9 mph | calculate → |
| 33x13.50R17 | 33.00" | +4.87% | +98 mm | 62.9 mph | calculate → |
| 33x13.00R17 | 33.00" | +4.87% | +85 mm | 62.9 mph | calculate → |
| 33x9.50R17 | 33.00" | +4.87% | -4 mm | 62.9 mph | calculate → |
| 32x10.50R17 | 32.00" | +1.69% | +22 mm | 61.0 mph | calculate → |
| 285/60R17 | 30.46" | -3.19% | +40 mm | 58.1 mph | calculate → |
| 235/85R17 | 32.73" | +4.00% | -10 mm | 62.4 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 | |
|---|---|---|---|---|---|
| 265/75R16 common | 31.65" | +0.58% | +20 mm | 60.3 mph | compare → |
| 265/65R18 common | 31.56" | +0.30% | +20 mm | 60.2 mph | compare → |
| 235/85R16 common | 31.73" | +0.83% | -10 mm | 60.5 mph | compare → |
| 285/60R18 | 31.46" | -0.01% | +40 mm | 60.0 mph | compare → |
| 275/70R16 | 31.16" | -0.99% | +30 mm | 59.4 mph | compare → |
| 245/70R18 | 31.50" | +0.11% | 0 mm | 60.1 mph | calculate → |
| 285/70R16 | 31.71" | +0.76% | +40 mm | 60.5 mph | calculate → |
Try another size against 245/75R17
Questions
What size is 245/75R17 in inches?
245/75R17 is about 31.5" tall and 9.6" wide on a 17-inch rim — roughly a 31.5x9.50R17 in inch sizing.
What does 245/75R17 mean?
245 mm section width, sidewall 75% of the width (7.23"), radial construction, 17-inch rim.
What tire sizes are equivalent to 245/75R17?
On the same 17" rim, within 3% of the diameter: 285/65R17 (+0.38%), 265/70R17 (+0.44%), 235/80R17 (+1.06%), 275/65R17 (-1.25%), 255/70R17 (-1.31%), 315/60R17 (+1.31%).
How many revolutions per mile does a 245/75R17 tire make?
About 641 revolutions per mile (circumference 98.9").
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.