165/90R17 tire size
165/90R17 is a metric size: 28.7" tall, 6.5" wide, on a 17" rim — about a 28.5x6.50R17. The sidewall is 5.8" and the tire turns 703 times per mile.
165/90R17 specs
| Overall diameter (height) | 28.69" · 729 mm |
|---|---|
| Section width | 6.50" · 165 mm |
| Sidewall height | 5.85" · 149 mm (90% of width) |
| Rim diameter | 17" |
| Circumference | 90.14" · 2.290 m |
| Revolutions per mile | 703 (437 per km) |
| Inch (flotation) equivalent | 28.5x6.50R17 |
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 | |
|---|---|---|---|---|---|
| 225/65R17 common | 28.52" | -0.62% | +60 mm | 59.6 mph | calculate → |
| 235/65R17 common | 29.03" | +1.17% | +70 mm | 60.7 mph | calculate → |
| 225/60R17 common | 27.63" | -3.70% | +60 mm | 57.8 mph | calculate → |
| 245/65R17 common | 29.54" | +2.95% | +80 mm | 61.8 mph | calculate → |
| 235/60R17 common | 28.10" | -2.06% | +70 mm | 58.8 mph | calculate → |
| 215/65R17 common | 28.00" | -2.40% | +50 mm | 58.6 mph | calculate → |
| 255/65R17 common | 30.05" | +4.73% | +90 mm | 62.8 mph | calculate → |
| 235/70R17 | 29.95" | +4.39% | +70 mm | 62.6 mph | calculate → |
| 255/60R17 | 29.05" | +1.23% | +90 mm | 60.7 mph | calculate → |
| 275/55R17 | 28.91" | +0.75% | +110 mm | 60.5 mph | calculate → |
| 245/55R17 | 27.61" | -3.77% | +80 mm | 57.7 mph | calculate → |
| 275/60R17 | 29.99" | +4.53% | +110 mm | 62.7 mph | calculate → |
| 265/60R17 | 29.52" | +2.88% | +100 mm | 61.7 mph | calculate → |
| 215/70R17 | 28.85" | +0.55% | +50 mm | 60.3 mph | calculate → |
| 255/55R17 | 28.04" | -2.26% | +90 mm | 58.6 mph | calculate → |
| 155/90R17 | 27.98" | -2.47% | -10 mm | 58.5 mph | calculate → |
| 305/45R17 | 27.81" | -3.09% | +140 mm | 58.1 mph | calculate → |
| 165/80R17 | 27.39" | -4.53% | 0 mm | 57.3 mph | calculate → |
| 28x6.00R17 | 28.00" | -2.41% | -13 mm | 58.6 mph | calculate → |
| 175/90R17 | 29.40" | +2.47% | +10 mm | 61.5 mph | calculate → |
| 275/50R17 | 27.83" | -3.02% | +110 mm | 58.2 mph | calculate → |
| 145/90R17 | 27.28" | -4.94% | -20 mm | 57.0 mph | calculate → |
| 245/60R17 | 28.57" | -0.41% | +80 mm | 59.8 mph | calculate → |
| 225/70R17 | 29.40" | +2.47% | +60 mm | 61.5 mph | calculate → |
| 345/40R17 | 27.87" | -2.88% | +180 mm | 58.3 mph | calculate → |
| 205/65R17 | 27.49" | -4.18% | +40 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 | |
|---|---|---|---|---|---|
| 225/60R18 common | 28.63" | -0.22% | +60 mm | 59.9 mph | calculate → |
| 235/70R16 common | 28.95" | +0.91% | +70 mm | 60.5 mph | calculate → |
| 245/55R18 | 28.61" | -0.29% | +80 mm | 59.8 mph | calculate → |
| 295/45R18 | 28.45" | -0.84% | +130 mm | 59.5 mph | calculate → |
| 215/75R16 | 28.70" | +0.01% | +50 mm | 60.0 mph | calculate → |
| 305/45R18 | 28.81" | +0.40% | +140 mm | 60.2 mph | calculate → |
| 205/80R16 | 28.91" | +0.77% | +40 mm | 60.5 mph | calculate → |
| 265/50R18 | 28.43" | -0.91% | +100 mm | 59.5 mph | calculate → |
Try another size against 165/90R17
Questions
What size is 165/90R17 in inches?
165/90R17 is about 28.7" tall and 6.5" wide on a 17-inch rim — roughly a 28.5x6.50R17 in inch sizing.
What does 165/90R17 mean?
165 mm section width, sidewall 90% of the width (5.85"), radial construction, 17-inch rim.
What tire sizes are equivalent to 165/90R17?
On the same 17" rim, within 3% of the diameter: 245/60R17 (-0.41%), 215/70R17 (+0.55%), 225/65R17 (-0.62%), 275/55R17 (+0.75%), 235/65R17 (+1.17%), 255/60R17 (+1.23%).
How many revolutions per mile does a 165/90R17 tire make?
About 703 revolutions per mile (circumference 90.1").
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.