235/30R22 tire size
235/30R22 is a metric size: 27.6" tall, 9.3" wide, on a 22" rim — about a 27.5x9.50R22. The sidewall is 2.8" and the tire turns 732 times per mile.
235/30R22 specs
| Overall diameter (height) | 27.55" · 700 mm |
|---|---|
| Section width | 9.25" · 235 mm |
| Sidewall height | 2.78" · 71 mm (30% of width) |
| Rim diameter | 22" |
| Circumference | 86.55" · 2.198 m |
| Revolutions per mile | 732 (455 per km) |
| Inch (flotation) equivalent | 27.5x9.50R22 |
Equivalent sizes on a 22" 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 | |
|---|---|---|---|---|---|
| 285/30R22 | 28.73" | +4.29% | +50 mm | 62.6 mph | calculate → |
| 295/25R22 | 27.81" | +0.93% | +60 mm | 60.6 mph | calculate → |
| 255/30R22 | 28.02" | +1.71% | +20 mm | 61.0 mph | calculate → |
| 265/30R22 | 28.26" | +2.57% | +30 mm | 61.5 mph | calculate → |
| 245/30R22 | 27.79" | +0.86% | +10 mm | 60.5 mph | calculate → |
| 335/25R22 | 28.59" | +3.79% | +100 mm | 62.3 mph | calculate → |
| 285/25R22 | 27.61" | +0.21% | +50 mm | 60.1 mph | calculate → |
| 315/25R22 | 28.20" | +2.36% | +80 mm | 61.4 mph | calculate → |
| 275/25R22 | 27.41" | -0.50% | +40 mm | 59.7 mph | calculate → |
| 305/25R22 | 28.00" | +1.64% | +70 mm | 61.0 mph | calculate → |
| 275/30R22 | 28.50" | +3.43% | +40 mm | 62.1 mph | calculate → |
Plus / minus sizing: 21" and 23" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 245/35R21 | 27.75" | +0.73% | +10 mm | 60.4 mph | calculate → |
| 285/30R21 | 27.73" | +0.66% | +50 mm | 60.4 mph | calculate → |
| 275/30R21 | 27.50" | -0.20% | +40 mm | 59.9 mph | calculate → |
| 325/25R21 | 27.40" | -0.56% | +90 mm | 59.7 mph | calculate → |
| 345/25R21 | 27.79" | +0.87% | +110 mm | 60.5 mph | calculate → |
Try another size against 235/30R22
Questions
What size is 235/30R22 in inches?
235/30R22 is about 27.6" tall and 9.3" wide on a 22-inch rim — roughly a 27.5x9.50R22 in inch sizing.
What does 235/30R22 mean?
235 mm section width, sidewall 30% of the width (2.78"), radial construction, 22-inch rim.
What tire sizes are equivalent to 235/30R22?
On the same 22" rim, within 3% of the diameter: 285/25R22 (+0.21%), 275/25R22 (-0.50%), 245/30R22 (+0.86%), 295/25R22 (+0.93%), 305/25R22 (+1.64%), 255/30R22 (+1.71%).
How many revolutions per mile does a 235/30R22 tire make?
About 732 revolutions per mile (circumference 86.6").
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.