235/60R20 vs 275/50R20 tire size
275/50R20 vs 235/60R20, diameter
-0.9% shorter
- Speedometer
- 60.5 mph
- At a true 60 mph
- Diameter
- 30.83 in
- Was 31.10 in
- Revs per mile
- 654
- Was 648
- 3% guideline
- Within
Car built for 235/60R20, now on 275/50R20.
235/60R20 and 275/50R20
| Measure | 235/60R20 | 275/50R20 | Difference |
|---|---|---|---|
| Width, mm | 235 | 275 | +40 |
| Sidewall, % of width | 60 | 50 | -10 |
| Rim, in | 20 | 20 | 0 |
| Section height, in | 5.55 | 5.41 | -0.14 |
| Diameter, in | 31.10 | 30.83 | -0.28 (-0.9%) |
| Circumference, in | 97.7 | 96.8 | -0.9 |
| Revs per mile | 648 | 654 | +6 (+0.9%) |
Fitting 275/50R20 instead of 235/60R20
Within the usual 3% diameter guideline.
- 40 mm wider. Check rubbing at full lock.
Cars with 235/60R20
Cars with 275/50R20
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