275/35R21 vs 285/30R22 tire size
285/30R22 vs 275/35R21, diameter
+0.5% taller
- Speedometer
- 59.7 mph
- At a true 60 mph
- Diameter
- 28.73 in
- Was 28.58 in
- Revs per mile
- 702
- Was 706
- 3% guideline
- Within
Car built for 275/35R21, now on 285/30R22.
275/35R21 and 285/30R22
| Measure | 275/35R21 | 285/30R22 | Difference |
|---|---|---|---|
| Width, mm | 275 | 285 | +10 |
| Sidewall, % of width | 35 | 30 | -5 |
| Rim, in | 21 | 22 | +1 |
| Section height, in | 3.79 | 3.37 | -0.42 |
| Diameter, in | 28.58 | 28.73 | +0.15 (+0.5%) |
| Circumference, in | 89.8 | 90.3 | +0.5 |
| Revs per mile | 706 | 702 | -4 (-0.5%) |
Fitting 285/30R22 instead of 275/35R21
Within the usual 3% diameter guideline.
- Needs 22 in wheels.
Cars with 275/35R21
Cars with 285/30R22
What this cannot tell you
Diameter within 3% is a common shop guideline, not a maker spec.
Load index, offset and clearance are not in this data.
- Two or more sources agree
- One source
- Model-level or estimate
- Sources differ