225/55R19 vs 325/35R20 tire size
325/35R20 vs 225/55R19, diameter
+0.7% taller
- Speedometer
- 59.6 mph
- At a true 60 mph
- Diameter
- 28.96 in
- Was 28.74 in
- Revs per mile
- 696
- Was 702
- 3% guideline
- Within
Car built for 225/55R19, now on 325/35R20.
225/55R19 and 325/35R20
| Measure | 225/55R19 | 325/35R20 | Difference |
|---|---|---|---|
| Width, mm | 225 | 325 | +100 |
| Sidewall, % of width | 55 | 35 | -20 |
| Rim, in | 19 | 20 | +1 |
| Section height, in | 4.87 | 4.48 | -0.39 |
| Diameter, in | 28.74 | 28.96 | +0.21 (+0.7%) |
| Circumference, in | 90.3 | 91.0 | +0.7 |
| Revs per mile | 702 | 696 | -5 (-0.7%) |
Fitting 325/35R20 instead of 225/55R19
Within the usual 3% diameter guideline.
- Needs 20 in wheels.
- 100 mm wider. Check rubbing at full lock.
Cars with 225/55R19
Cars with 325/35R20
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