185/60R16 vs 225/45R17 tire size
225/45R17 vs 185/60R16, diameter
+0.9% taller
- Speedometer
- 59.4 mph
- At a true 60 mph
- Diameter
- 24.97 in
- Was 24.74 in
- Revs per mile
- 808
- Was 815
- 3% guideline
- Within
Car built for 185/60R16, now on 225/45R17.
185/60R16 and 225/45R17
| Measure | 185/60R16 | 225/45R17 | Difference |
|---|---|---|---|
| Width, mm | 185 | 225 | +40 |
| Sidewall, % of width | 60 | 45 | -15 |
| Rim, in | 16 | 17 | +1 |
| Section height, in | 4.37 | 3.99 | -0.38 |
| Diameter, in | 24.74 | 24.97 | +0.23 (+0.9%) |
| Circumference, in | 77.7 | 78.5 | +0.7 |
| Revs per mile | 815 | 808 | -8 (-0.9%) |
Fitting 225/45R17 instead of 185/60R16
Within the usual 3% diameter guideline.
- Needs 17 in wheels.
- 40 mm wider. Check rubbing at full lock.
Cars with 185/60R16
Cars with 225/45R17
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