295/30R18 vs 255/30R19 tire size
255/30R19 vs 295/30R18, diameter
+0.2% taller
- Speedometer
- 59.9 mph
- At a true 60 mph
- Diameter
- 25.02 in
- Was 24.97 in
- Revs per mile
- 806
- Was 808
- 3% guideline
- Within
Car built for 295/30R18, now on 255/30R19.
295/30R18 and 255/30R19
| Measure | 295/30R18 | 255/30R19 | Difference |
|---|---|---|---|
| Width, mm | 295 | 255 | -40 |
| Sidewall, % of width | 30 | 30 | 0 |
| Rim, in | 18 | 19 | +1 |
| Section height, in | 3.48 | 3.01 | -0.47 |
| Diameter, in | 24.97 | 25.02 | +0.06 (+0.2%) |
| Circumference, in | 78.4 | 78.6 | +0.2 |
| Revs per mile | 808 | 806 | -2 (-0.2%) |
Fitting 255/30R19 instead of 295/30R18
Within the usual 3% diameter guideline.
- Needs 19 in wheels.
Cars with 255/30R19
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