265/45R20 vs 295/40R20 tire size
295/40R20 vs 265/45R20, diameter
-0.3% shorter
- Speedometer
- 60.2 mph
- At a true 60 mph
- Diameter
- 29.29 in
- Was 29.39 in
- Revs per mile
- 689
- Was 686
- 3% guideline
- Within
Car built for 265/45R20, now on 295/40R20.
265/45R20 and 295/40R20
| Measure | 265/45R20 | 295/40R20 | Difference |
|---|---|---|---|
| Width, mm | 265 | 295 | +30 |
| Sidewall, % of width | 45 | 40 | -5 |
| Rim, in | 20 | 20 | 0 |
| Section height, in | 4.69 | 4.65 | -0.05 |
| Diameter, in | 29.39 | 29.29 | -0.10 (-0.3%) |
| Circumference, in | 92.3 | 92.0 | -0.3 |
| Revs per mile | 686 | 689 | +2 (+0.3%) |
Fitting 295/40R20 instead of 265/45R20
Within the usual 3% diameter guideline.
- 30 mm wider. Check rubbing at full lock.
Cars with 265/45R20
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