285/65R17 tire size
285/65R17 is a metric size: 31.6" tall, 11.2" wide, on a 17" rim — about a 31.5x11.00R17. The sidewall is 7.3" and the tire turns 639 times per mile.
285/65R17 specs
| Overall diameter (height) | 31.59" · 802 mm |
|---|---|
| Section width | 11.22" · 285 mm |
| Sidewall height | 7.29" · 185 mm (65% of width) |
| Rim diameter | 17" |
| Circumference | 99.23" · 2.520 m |
| Revolutions per mile | 639 (397 per km) |
| Inch (flotation) equivalent | 31.5x11.00R17 |
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" | +0.06% | -20 mm | 60.0 mph | calculate → |
| 245/70R17 common | 30.50" | -3.43% | -40 mm | 57.9 mph | calculate → |
| 285/70R17 common | 32.71" | +3.55% | 0 mm | 62.1 mph | calculate → |
| 245/75R17 common | 31.47" | -0.37% | -40 mm | 59.8 mph | calculate → |
| 265/65R17 common | 30.56" | -3.24% | -20 mm | 58.1 mph | calculate → |
| 235/80R17 common | 31.80" | +0.69% | -50 mm | 60.4 mph | calculate → |
| 255/65R17 common | 30.05" | -4.86% | -30 mm | 57.1 mph | calculate → |
| 255/70R17 common | 31.06" | -1.68% | -30 mm | 59.0 mph | calculate → |
| 255/75R17 | 32.06" | +1.50% | -30 mm | 60.9 mph | calculate → |
| 235/75R17 | 30.88" | -2.24% | -50 mm | 58.7 mph | calculate → |
| 33x12.50R17 | 33.00" | +4.47% | +33 mm | 62.7 mph | calculate → |
| 275/70R17 | 32.16" | +1.81% | -10 mm | 61.1 mph | calculate → |
| 255/80R17 | 33.06" | +4.67% | -30 mm | 62.8 mph | calculate → |
| 305/65R17 | 32.61" | +3.24% | +20 mm | 61.9 mph | calculate → |
| 225/75R17 | 30.29" | -4.11% | -60 mm | 57.5 mph | calculate → |
| 275/65R17 | 31.07" | -1.62% | -10 mm | 59.0 mph | calculate → |
| 315/60R17 | 31.88" | +0.93% | +30 mm | 60.6 mph | calculate → |
| 32x11.50R17 | 32.00" | +1.31% | +7 mm | 60.8 mph | calculate → |
| 31x10.50R17 | 31.00" | -1.86% | -18 mm | 58.9 mph | calculate → |
| 315/55R17 | 30.64" | -2.99% | +30 mm | 58.2 mph | calculate → |
| 33x10.50R17 | 33.00" | +4.47% | -18 mm | 62.7 mph | calculate → |
| 33x11.50R17 | 33.00" | +4.47% | +7 mm | 62.7 mph | calculate → |
| 33x13.50R17 | 33.00" | +4.47% | +58 mm | 62.7 mph | calculate → |
| 33x13.00R17 | 33.00" | +4.47% | +45 mm | 62.7 mph | calculate → |
| 33x9.50R17 | 33.00" | +4.47% | -44 mm | 62.7 mph | calculate → |
| 32x10.50R17 | 32.00" | +1.31% | -18 mm | 60.8 mph | calculate → |
| 285/60R17 | 30.46" | -3.55% | 0 mm | 57.9 mph | calculate → |
| 235/85R17 | 32.73" | +3.61% | -50 mm | 62.2 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" | +0.20% | -20 mm | 60.1 mph | calculate → |
| 265/65R18 common | 31.56" | -0.07% | -20 mm | 60.0 mph | calculate → |
| 235/85R16 common | 31.73" | +0.45% | -50 mm | 60.3 mph | calculate → |
| 285/60R18 | 31.46" | -0.39% | 0 mm | 59.8 mph | calculate → |
| 245/70R18 | 31.50" | -0.26% | -40 mm | 59.8 mph | calculate → |
| 285/70R16 | 31.71" | +0.39% | 0 mm | 60.2 mph | calculate → |
Try another size against 285/65R17
Questions
What size is 285/65R17 in inches?
285/65R17 is about 31.6" tall and 11.2" wide on a 17-inch rim — roughly a 31.5x11.00R17 in inch sizing.
What does 285/65R17 mean?
285 mm section width, sidewall 65% of the width (7.29"), radial construction, 17-inch rim.
What tire sizes are equivalent to 285/65R17?
On the same 17" rim, within 3% of the diameter: 265/70R17 (+0.06%), 245/75R17 (-0.37%), 235/80R17 (+0.69%), 315/60R17 (+0.93%), 32x10.50R17 (+1.31%), 32x11.50R17 (+1.31%).
How many revolutions per mile does a 285/65R17 tire make?
About 639 revolutions per mile (circumference 99.2").
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.