305/55R22 tire size
305/55R22 is a metric size: 35.2" tall, 12.0" wide, on a 22" rim — about a 35x12.00R22. The sidewall is 6.6" and the tire turns 573 times per mile.
305/55R22 specs
| Overall diameter (height) | 35.21" · 894 mm |
|---|---|
| Section width | 12.01" · 305 mm |
| Sidewall height | 6.60" · 168 mm (55% of width) |
| Rim diameter | 22" |
| Circumference | 110.61" · 2.810 m |
| Revolutions per mile | 573 (356 per km) |
| Inch (flotation) equivalent | 35x12.00R22 |
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 | |
|---|---|---|---|---|---|
| 35x12.50R22 | 35.00" | -0.59% | +13 mm | 59.6 mph | calculate → |
| 325/50R22 | 34.80" | -1.17% | +20 mm | 59.3 mph | calculate → |
| 285/55R22 | 34.34" | -2.46% | -20 mm | 58.5 mph | calculate → |
| 295/55R22 | 34.78" | -1.23% | -10 mm | 59.3 mph | calculate → |
| 295/50R22 | 33.61" | -4.53% | -10 mm | 57.3 mph | calculate → |
| 35x15.50R22 | 35.00" | -0.59% | +89 mm | 59.6 mph | calculate → |
| 375/45R22 | 35.29" | +0.22% | +70 mm | 60.1 mph | calculate → |
| 265/60R22 | 34.52" | -1.96% | -40 mm | 58.8 mph | calculate → |
| 275/60R22 | 34.99" | -0.62% | -30 mm | 59.6 mph | calculate → |
| 325/55R22 | 36.07" | +2.46% | +20 mm | 61.5 mph | calculate → |
| 305/50R22 | 34.01" | -3.41% | 0 mm | 58.0 mph | calculate → |
| 35x13.50R22 | 35.00" | -0.59% | +38 mm | 59.6 mph | calculate → |
| 35x14.50R22 | 35.00" | -0.59% | +63 mm | 59.6 mph | calculate → |
| 335/55R22 | 36.51" | +3.69% | +30 mm | 62.2 mph | calculate → |
Try another size against 305/55R22
Questions
What size is 305/55R22 in inches?
305/55R22 is about 35.2" tall and 12.0" wide on a 22-inch rim — roughly a 35x12.00R22 in inch sizing.
What does 305/55R22 mean?
305 mm section width, sidewall 55% of the width (6.60"), radial construction, 22-inch rim.
What tire sizes are equivalent to 305/55R22?
On the same 22" rim, within 3% of the diameter: 375/45R22 (+0.22%), 35x12.50R22 (-0.59%), 35x13.50R22 (-0.59%), 35x14.50R22 (-0.59%), 35x15.50R22 (-0.59%), 275/60R22 (-0.62%).
How many revolutions per mile does a 305/55R22 tire make?
About 573 revolutions per mile (circumference 110.6").
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.