235/60R19 vs 285/45R20 tire size
285/45R20 vs 235/60R19, diameter
Same diameter
- Speedometer
- 60.0 mph
- At a true 60 mph
- Diameter
- 30.10 in
- Was 30.10 in
- Revs per mile
- 670
- Was 670
- 3% guideline
- Within
Car built for 235/60R19, now on 285/45R20.
235/60R19 and 285/45R20
| Measure | 235/60R19 | 285/45R20 | Difference |
|---|---|---|---|
| Width, mm | 235 | 285 | +50 |
| Sidewall, % of width | 60 | 45 | -15 |
| Rim, in | 19 | 20 | +1 |
| Section height, in | 5.55 | 5.05 | -0.50 |
| Diameter, in | 30.10 | 30.10 | 0 (-0.0%) |
| Circumference, in | 94.6 | 94.6 | -0.0 |
| Revs per mile | 670 | 670 | +0 (+0.0%) |
Fitting 285/45R20 instead of 235/60R19
Within the usual 3% diameter guideline.
- Needs 20 in wheels.
- 50 mm wider. Check rubbing at full lock.
- Shorter sidewall: 0.5 in less.
Cars with 235/60R19
Cars with 285/45R20
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