215/45R18 vs 285/30R19 tire size
285/30R19 vs 215/45R18, diameter
+0.4% taller
- Speedometer
- 59.7 mph
- At a true 60 mph
- Diameter
- 25.73 in
- Was 25.62 in
- Revs per mile
- 784
- Was 787
- 3% guideline
- Within
Car built for 215/45R18, now on 285/30R19.
215/45R18 and 285/30R19
| Measure | 215/45R18 | 285/30R19 | Difference |
|---|---|---|---|
| Width, mm | 215 | 285 | +70 |
| Sidewall, % of width | 45 | 30 | -15 |
| Rim, in | 18 | 19 | +1 |
| Section height, in | 3.81 | 3.37 | -0.44 |
| Diameter, in | 25.62 | 25.73 | +0.11 (+0.4%) |
| Circumference, in | 80.5 | 80.8 | +0.4 |
| Revs per mile | 787 | 784 | -3 (-0.4%) |
Fitting 285/30R19 instead of 215/45R18
Within the usual 3% diameter guideline.
- Needs 19 in wheels.
- 70 mm wider. Check rubbing at full lock.
Cars with 215/45R18
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