235/80R17 tire size
235/80R17 is a metric size: 31.8" tall, 9.3" wide, on a 17" rim — about a 32x9.50R17. The sidewall is 7.4" and the tire turns 634 times per mile.
235/80R17 specs
| Overall diameter (height) | 31.80" · 808 mm |
|---|---|
| Section width | 9.25" · 235 mm |
| Sidewall height | 7.40" · 188 mm (80% of width) |
| Rim diameter | 17" |
| Circumference | 99.91" · 2.538 m |
| Revolutions per mile | 634 (394 per km) |
| Inch (flotation) equivalent | 32x9.50R17 |
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" | -0.62% | +30 mm | 59.6 mph | compare → |
| 245/70R17 common | 30.50" | -4.09% | +10 mm | 57.5 mph | compare → |
| 285/70R17 common | 32.71" | +2.85% | +50 mm | 61.7 mph | compare → |
| 245/75R17 common | 31.47" | -1.05% | +10 mm | 59.4 mph | compare → |
| 265/65R17 common | 30.56" | -3.90% | +30 mm | 57.7 mph | compare → |
| 255/70R17 common | 31.06" | -2.35% | +20 mm | 58.6 mph | compare → |
| 255/75R17 | 32.06" | +0.80% | +20 mm | 60.5 mph | compare → |
| 295/70R17 | 33.26" | +4.58% | +60 mm | 62.7 mph | compare → |
| 235/75R17 | 30.88" | -2.91% | 0 mm | 58.3 mph | compare → |
| 33x12.50R17 | 33.00" | +3.76% | +83 mm | 62.3 mph | compare → |
| 275/70R17 | 32.16" | +1.11% | +40 mm | 60.7 mph | compare → |
| 255/80R17 | 33.06" | +3.96% | +20 mm | 62.4 mph | compare → |
| 305/65R17 | 32.61" | +2.54% | +70 mm | 61.5 mph | compare → |
| 225/75R17 | 30.29" | -4.77% | -10 mm | 57.1 mph | compare → |
| 275/65R17 | 31.07" | -2.29% | +40 mm | 58.6 mph | calculate → |
| 285/65R17 | 31.59" | -0.68% | +50 mm | 59.6 mph | calculate → |
| 315/60R17 | 31.88" | +0.25% | +80 mm | 60.1 mph | calculate → |
| 32x11.50R17 | 32.00" | +0.62% | +57 mm | 60.4 mph | calculate → |
| 31x10.50R17 | 31.00" | -2.53% | +32 mm | 58.5 mph | calculate → |
| 315/55R17 | 30.64" | -3.65% | +80 mm | 57.8 mph | calculate → |
| 33x10.50R17 | 33.00" | +3.76% | +32 mm | 62.3 mph | calculate → |
| 33x11.50R17 | 33.00" | +3.76% | +57 mm | 62.3 mph | calculate → |
| 33x13.50R17 | 33.00" | +3.76% | +108 mm | 62.3 mph | calculate → |
| 33x13.00R17 | 33.00" | +3.76% | +95 mm | 62.3 mph | calculate → |
| 33x9.50R17 | 33.00" | +3.76% | +6 mm | 62.3 mph | calculate → |
| 32x10.50R17 | 32.00" | +0.62% | +32 mm | 60.4 mph | calculate → |
| 235/85R17 | 32.73" | +2.91% | 0 mm | 61.7 mph | calculate → |
| 285/60R17 | 30.46" | -4.21% | +50 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 | |
|---|---|---|---|---|---|
| 275/65R18 common | 32.07" | +0.85% | +40 mm | 60.5 mph | compare → |
| 265/75R16 common | 31.65" | -0.48% | +30 mm | 59.7 mph | compare → |
| 265/65R18 common | 31.56" | -0.76% | +30 mm | 59.5 mph | compare → |
| 235/85R16 common | 31.73" | -0.24% | 0 mm | 59.9 mph | compare → |
| 255/70R18 common | 32.06" | +0.79% | +20 mm | 60.5 mph | compare → |
| 285/70R16 | 31.71" | -0.30% | +50 mm | 59.8 mph | calculate → |
| 32x11.50R16 | 32.00" | +0.62% | +57 mm | 60.4 mph | calculate → |
| 245/70R18 | 31.50" | -0.94% | +10 mm | 59.4 mph | calculate → |
| 225/90R16 | 31.94" | +0.45% | -10 mm | 60.3 mph | calculate → |
| 32x10.00R16 | 32.00" | +0.62% | +19 mm | 60.4 mph | calculate → |
| 32x9.00R16 | 32.00" | +0.62% | -6 mm | 60.4 mph | calculate → |
Try another size against 235/80R17
Questions
What size is 235/80R17 in inches?
235/80R17 is about 31.8" tall and 9.3" wide on a 17-inch rim — roughly a 32x9.50R17 in inch sizing.
What does 235/80R17 mean?
235 mm section width, sidewall 80% of the width (7.40"), radial construction, 17-inch rim.
What tire sizes are equivalent to 235/80R17?
On the same 17" rim, within 3% of the diameter: 315/60R17 (+0.25%), 32x10.50R17 (+0.62%), 32x11.50R17 (+0.62%), 265/70R17 (-0.62%), 285/65R17 (-0.68%), 255/75R17 (+0.80%).
How many revolutions per mile does a 235/80R17 tire make?
About 634 revolutions per mile (circumference 99.9").
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.