305/30R19 vs 225/35R20 tire size
225/35R20 vs 305/30R19, diameter
Same diameter
- Speedometer
- 60.0 mph
- At a true 60 mph
- Diameter
- 26.20 in
- Was 26.20 in
- Revs per mile
- 770
- Was 770
- 3% guideline
- Within
Car built for 305/30R19, now on 225/35R20.
305/30R19 and 225/35R20
| Measure | 305/30R19 | 225/35R20 | Difference |
|---|---|---|---|
| Width, mm | 305 | 225 | -80 |
| Sidewall, % of width | 30 | 35 | +5 |
| Rim, in | 19 | 20 | +1 |
| Section height, in | 3.60 | 3.10 | -0.50 |
| Diameter, in | 26.20 | 26.20 | 0 (-0.0%) |
| Circumference, in | 82.3 | 82.3 | -0.0 |
| Revs per mile | 770 | 770 | +0 (+0.0%) |
Fitting 225/35R20 instead of 305/30R19
Within the usual 3% diameter guideline.
- Needs 20 in wheels.
- Shorter sidewall: 0.5 in less.
Cars with 305/30R19
Cars with 225/35R20
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