235/55R20 vs 295/45R20 tire size
295/45R20 vs 235/55R20, diameter
+0.9% taller
- Speedometer
- 59.5 mph
- At a true 60 mph
- Diameter
- 30.45 in
- Was 30.18 in
- Revs per mile
- 662
- Was 668
- 3% guideline
- Within
Car built for 235/55R20, now on 295/45R20.
235/55R20 and 295/45R20
| Measure | 235/55R20 | 295/45R20 | Difference |
|---|---|---|---|
| Width, mm | 235 | 295 | +60 |
| Sidewall, % of width | 55 | 45 | -10 |
| Rim, in | 20 | 20 | 0 |
| Section height, in | 5.09 | 5.23 | +0.14 |
| Diameter, in | 30.18 | 30.45 | +0.28 (+0.9%) |
| Circumference, in | 94.8 | 95.7 | +0.9 |
| Revs per mile | 668 | 662 | -6 (-0.9%) |
Fitting 295/45R20 instead of 235/55R20
Within the usual 3% diameter guideline.
- 60 mm wider. Check rubbing at full lock.
Cars with 235/55R20
Cars with 295/45R20
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