245/30R22 tire size
245/30R22 is a metric size: 27.8" tall, 9.6" wide, on a 22" rim — about a 28x9.50R22. The sidewall is 2.9" and the tire turns 726 times per mile.
245/30R22 specs
| Overall diameter (height) | 27.79" · 706 mm |
|---|---|
| Section width | 9.65" · 245 mm |
| Sidewall height | 2.89" · 74 mm (30% of width) |
| Rim diameter | 22" |
| Circumference | 87.30" · 2.217 m |
| Revolutions per mile | 726 (451 per km) |
| Inch (flotation) equivalent | 28x9.50R22 |
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" | +3.40% | +40 mm | 62.0 mph | calculate → |
| 295/30R22 | 28.97" | +4.25% | +50 mm | 62.6 mph | calculate → |
| 295/25R22 | 27.81" | +0.07% | +50 mm | 60.0 mph | calculate → |
| 255/30R22 | 28.02" | +0.85% | +10 mm | 60.5 mph | calculate → |
| 265/30R22 | 28.26" | +1.70% | +20 mm | 61.0 mph | calculate → |
| 255/35R22 | 29.03" | +4.46% | +10 mm | 62.7 mph | calculate → |
| 335/25R22 | 28.59" | +2.90% | +90 mm | 61.7 mph | calculate → |
| 235/30R22 | 27.55" | -0.85% | -10 mm | 59.5 mph | calculate → |
| 285/25R22 | 27.61" | -0.64% | +40 mm | 59.6 mph | calculate → |
| 315/25R22 | 28.20" | +1.49% | +70 mm | 60.9 mph | calculate → |
| 305/25R22 | 28.00" | +0.78% | +60 mm | 60.5 mph | calculate → |
| 275/25R22 | 27.41" | -1.35% | +30 mm | 59.2 mph | calculate → |
| 275/30R22 | 28.50" | +2.55% | +30 mm | 61.5 mph | calculate → |
| 355/25R22 | 28.99" | +4.32% | +110 mm | 62.6 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" | -0.13% | 0 mm | 59.9 mph | calculate → |
| 255/35R21 | 28.03" | +0.86% | +10 mm | 60.5 mph | calculate → |
| 295/30R21 | 27.97" | +0.65% | +50 mm | 60.4 mph | calculate → |
| 285/30R21 | 27.73" | -0.20% | +40 mm | 59.9 mph | calculate → |
| 355/25R21 | 27.99" | +0.72% | +110 mm | 60.4 mph | calculate → |
| 345/25R21 | 27.79" | +0.01% | +100 mm | 60.0 mph | calculate → |
Try another size against 245/30R22
Questions
What size is 245/30R22 in inches?
245/30R22 is about 27.8" tall and 9.6" wide on a 22-inch rim — roughly a 28x9.50R22 in inch sizing.
What does 245/30R22 mean?
245 mm section width, sidewall 30% of the width (2.89"), radial construction, 22-inch rim.
What tire sizes are equivalent to 245/30R22?
On the same 22" rim, within 3% of the diameter: 295/25R22 (+0.07%), 285/25R22 (-0.64%), 305/25R22 (+0.78%), 235/30R22 (-0.85%), 255/30R22 (+0.85%), 275/25R22 (-1.35%).
How many revolutions per mile does a 245/30R22 tire make?
About 726 revolutions per mile (circumference 87.3").
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.