315/25R22 tire size
315/25R22 is a metric size: 28.2" tall, 12.4" wide, on a 22" rim — about a 28x12.50R22. The sidewall is 3.1" and the tire turns 715 times per mile.
315/25R22 specs
| Overall diameter (height) | 28.20" · 716 mm |
|---|---|
| Section width | 12.40" · 315 mm |
| Sidewall height | 3.10" · 79 mm (25% of width) |
| Rim diameter | 22" |
| Circumference | 88.60" · 2.250 m |
| Revolutions per mile | 715 (444 per km) |
| Inch (flotation) equivalent | 28x12.50R22 |
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 | |
|---|---|---|---|---|---|
| 265/35R22 | 29.30" | +3.91% | -50 mm | 62.3 mph | calculate → |
| 275/35R22 | 29.58" | +4.89% | -40 mm | 62.9 mph | calculate → |
| 285/30R22 | 28.73" | +1.88% | -30 mm | 61.1 mph | calculate → |
| 295/30R22 | 28.97" | +2.72% | -20 mm | 61.6 mph | calculate → |
| 315/30R22 | 29.44" | +4.40% | 0 mm | 62.6 mph | calculate → |
| 265/30R22 | 28.26" | +0.21% | -50 mm | 60.1 mph | calculate → |
| 255/30R22 | 28.02" | -0.63% | -60 mm | 59.6 mph | calculate → |
| 295/25R22 | 27.81" | -1.40% | -20 mm | 59.2 mph | calculate → |
| 255/35R22 | 29.03" | +2.93% | -60 mm | 61.8 mph | calculate → |
| 335/25R22 | 28.59" | +1.40% | +20 mm | 60.8 mph | calculate → |
| 245/30R22 | 27.79" | -1.47% | -70 mm | 59.1 mph | calculate → |
| 235/30R22 | 27.55" | -2.30% | -80 mm | 58.6 mph | calculate → |
| 285/25R22 | 27.61" | -2.09% | -30 mm | 58.7 mph | calculate → |
| 305/25R22 | 28.00" | -0.70% | -10 mm | 59.6 mph | calculate → |
| 275/30R22 | 28.50" | +1.05% | -40 mm | 60.6 mph | calculate → |
| 355/25R22 | 28.99" | +2.79% | +40 mm | 61.7 mph | calculate → |
| 275/25R22 | 27.41" | -2.79% | -40 mm | 58.3 mph | calculate → |
| 305/30R22 | 29.20" | +3.56% | -10 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 | |
|---|---|---|---|---|---|
| 265/35R21 | 28.30" | +0.36% | -50 mm | 60.2 mph | calculate → |
| 255/35R21 | 28.03" | -0.61% | -60 mm | 59.6 mph | calculate → |
| 315/30R21 | 28.44" | +0.85% | 0 mm | 60.5 mph | calculate → |
| 305/30R21 | 28.20" | +0.01% | -10 mm | 60.0 mph | calculate → |
| 295/30R21 | 27.97" | -0.82% | -20 mm | 59.5 mph | calculate → |
| 355/25R21 | 27.99" | -0.75% | +40 mm | 59.5 mph | calculate → |
| 265/25R23 | 28.22" | +0.06% | -50 mm | 60.0 mph | calculate → |
Try another size against 315/25R22
Questions
What size is 315/25R22 in inches?
315/25R22 is about 28.2" tall and 12.4" wide on a 22-inch rim — roughly a 28x12.50R22 in inch sizing.
What does 315/25R22 mean?
315 mm section width, sidewall 25% of the width (3.10"), radial construction, 22-inch rim.
What tire sizes are equivalent to 315/25R22?
On the same 22" rim, within 3% of the diameter: 265/30R22 (+0.21%), 255/30R22 (-0.63%), 305/25R22 (-0.70%), 275/30R22 (+1.05%), 295/25R22 (-1.40%), 335/25R22 (+1.40%).
How many revolutions per mile does a 315/25R22 tire make?
About 715 revolutions per mile (circumference 88.6").
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.