265/45R19 vs 305/35R20 tire size
305/35R20 vs 265/45R19, diameter
Same diameter
- Speedometer
- 60.0 mph
- At a true 60 mph
- Diameter
- 28.41 in
- Was 28.39 in
- Revs per mile
- 710
- Was 710
- 3% guideline
- Within
Car built for 265/45R19, now on 305/35R20.
265/45R19 and 305/35R20
| Measure | 265/45R19 | 305/35R20 | Difference |
|---|---|---|---|
| Width, mm | 265 | 305 | +40 |
| Sidewall, % of width | 45 | 35 | -10 |
| Rim, in | 19 | 20 | +1 |
| Section height, in | 4.69 | 4.20 | -0.49 |
| Diameter, in | 28.39 | 28.41 | +0.02 (+0.1%) |
| Circumference, in | 89.2 | 89.2 | +0.0 |
| Revs per mile | 710 | 710 | -0 (-0.1%) |
Fitting 305/35R20 instead of 265/45R19
Within the usual 3% diameter guideline.
- Needs 20 in wheels.
- 40 mm wider. Check rubbing at full lock.
Cars with 265/45R19
Cars with 305/35R20
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