29.9" tall, 11.2" wide, 3.9" sidewall
A 285/35R22 tire is 29.9 inches (758 mm) tall and 11.2 inches wide. The sidewall is 35% of the width, 3.9 inches, on a 22-inch wheel, and the tire turns about 676 times per mile.
In flotation terms that is about 29.9x11.2R22. People often call it a 30-inch tire.
The size most often compared with it is 285/40R22, which is 1.1" taller (+3.8%). At an indicated 60 mph you would be doing 62.3 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 285/35R22 | |
|---|---|---|---|---|---|
| 295/35R22 | 30.1" | 11.6" | 4.1" | +0.9% | |
| 305/35R22 | 30.4" | 12.0" | 4.2" | +1.8% | |
| 305/30R22 | 29.2" | 12.0" | 3.6" | −2.2% | |
| 295/30R22 | 29.0" | 11.6" | 3.5" | −3.0% | |
| 285/40R22 | 31.0" | 11.2" | 4.5" | +3.8% | compare |
| 295/40R22 | 31.3" | 11.6" | 4.6" | +4.8% | |
| 265/45R22 | 31.4" | 10.4" | 4.7" | +5.1% | |
| 265/30R22 | 28.3" | 10.4" | 3.1" | −5.3% | |
| 305/40R22 | 31.6" | 12.0" | 4.8" | +5.9% | |
| 275/45R22 | 31.7" | 10.8" | 4.9" | +6.3% |
Sizes within 2% of 29.9" on 20" or 24" wheels.
| Size | Diameter | Width | Sidewall | vs 285/35R22 | |
|---|---|---|---|---|---|
| 315/40R20 | 29.9" | 12.4" | 5.0" | +0.2% | |
| 245/30R24 | 29.8" | 9.6" | 2.9" | −0.2% | |
| 305/40R20 | 29.6" | 12.0" | 4.8" | −0.8% | |
| 295/40R20 | 29.3" | 11.6" | 4.6" | −1.9% |
Actual speed when the speedometer is calibrated for 285/35R22.
| Speedometer shows | on 285/40R22 | on 295/35R22 | on 305/35R22 |
|---|---|---|---|
| 30 mph | 31.1 mph | 30.3 mph | 30.6 mph |
| 45 mph | 46.7 mph | 45.4 mph | 45.8 mph |
| 60 mph | 62.3 mph | 60.6 mph | 61.1 mph |
| 70 mph | 72.6 mph | 70.6 mph | 71.3 mph |
29.9 inches (758 mm). The sidewall is 3.9 inches.
11.2 inches (285 mm) section width, measured sidewall to sidewall.
About 29.9x11.2R22.
285/40R22 is +3.8% in diameter, more than the common 3% guideline, so expect a speedometer error and check clearance. It is 0.0" wider.