34.8" tall, 12.8" wide, 6.4" sidewall
A 325/50R22 tire is 34.8 inches (884 mm) tall and 12.8 inches wide. The sidewall is 50% of the width, 6.4 inches, on a 22-inch wheel, and the tire turns about 580 times per mile.
In flotation terms that is about 34.8x12.8R22, closest to the common 35x12.50R22 (35.0"). People often call it a 35-inch tire.
The size most often compared with it is 33x12.50R22, which is 1.8" shorter (−5.2%). At an indicated 60 mph you would be doing 56.9 mph on it, more than the 3% change many shops use as a limit.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 22" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 325/50R22 | |
|---|---|---|---|---|---|
| 35x12.50R22 | 35.0" | 12.5" | 6.5" | +0.6% | |
| 315/50R22 | 34.4" | 12.4" | 6.2" | −1.1% | |
| 305/55R22 | 35.2" | 12.0" | 6.6" | +1.2% | |
| 305/50R22 | 34.0" | 12.0" | 6.0" | −2.3% | |
| 325/45R22 | 33.5" | 12.8" | 5.8" | −3.7% | |
| 325/55R22 | 36.1" | 12.8" | 7.0" | +3.7% | |
| 315/45R22 | 33.2" | 12.4" | 5.6" | −4.7% | |
| 33x12.50R22 | 33.0" | 12.5" | 5.5" | −5.2% | compare |
| 305/45R22 | 32.8" | 12.0" | 5.4" | −5.7% | |
| 37x12.50R22 | 37.0" | 12.5" | 7.5" | +6.3% |
Sizes within 2% of 34.8" on 24" or 20" wheels.
| Size | Diameter | Width | Sidewall | vs 325/50R22 | |
|---|---|---|---|---|---|
| 305/45R24 | 34.8" | 12.0" | 5.4" | +0.0% | |
| 315/60R20 | 34.9" | 12.4" | 7.4" | +0.2% | |
| 265/70R20 | 34.6" | 10.4" | 7.3" | −0.5% | |
| 35x11.50R20 | 35.0" | 11.5" | 7.5" | +0.6% | |
| 35x12.50R20 | 35.0" | 12.5" | 7.5" | +0.6% | |
| 35x12.50R24 | 35.0" | 12.5" | 5.5" | +0.6% |
Actual speed when the speedometer is calibrated for 325/50R22.
| Speedometer shows | on 33x12.50R22 | on 35x12.50R22 | on 315/50R22 |
|---|---|---|---|
| 30 mph | 28.5 mph | 30.2 mph | 29.7 mph |
| 45 mph | 42.7 mph | 45.3 mph | 44.5 mph |
| 60 mph | 56.9 mph | 60.4 mph | 59.3 mph |
| 70 mph | 66.4 mph | 70.4 mph | 69.2 mph |
34.8 inches (884 mm). The sidewall is 6.4 inches.
12.8 inches (325 mm) section width, measured sidewall to sidewall.
About 34.8x12.8R22; the closest common flotation size is 35x12.50R22 at 35.0".
33x12.50R22 is −5.2% in diameter, more than the common 3% guideline, so expect a speedometer error and check clearance. It is 0.3" narrower.