265/50R19 vs 265/45R20 tire size
265/45R20 vs 265/50R19, diameter
-0.1% shorter
- Speedometer
- 60.1 mph
- At a true 60 mph
- Diameter
- 29.39 in
- Was 29.43 in
- Revs per mile
- 686
- Was 685
- 3% guideline
- Within
Car built for 265/50R19, now on 265/45R20.
265/50R19 and 265/45R20
| Measure | 265/50R19 | 265/45R20 | Difference |
|---|---|---|---|
| Width, mm | 265 | 265 | 0 |
| Sidewall, % of width | 50 | 45 | -5 |
| Rim, in | 19 | 20 | +1 |
| Section height, in | 5.22 | 4.69 | -0.52 |
| Diameter, in | 29.43 | 29.39 | -0.04 (-0.1%) |
| Circumference, in | 92.5 | 92.3 | -0.1 |
| Revs per mile | 685 | 686 | +1 (+0.1%) |
Fitting 265/45R20 instead of 265/50R19
Within the usual 3% diameter guideline.
- Needs 20 in wheels.
- Shorter sidewall: 0.5 in less.
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