185/65R15 vs 205/55R16 tire size
205/55R16 vs 185/65R15, diameter
+1.7% taller
- Speedometer
- 59.0 mph
- At a true 60 mph
- Diameter
- 24.88 in
- Was 24.47 in
- Revs per mile
- 811
- Was 824
- 3% guideline
- Within
Car built for 185/65R15, now on 205/55R16.
185/65R15 and 205/55R16
| Measure | 185/65R15 | 205/55R16 | Difference |
|---|---|---|---|
| Width, mm | 185 | 205 | +20 |
| Sidewall, % of width | 65 | 55 | -10 |
| Rim, in | 15 | 16 | +1 |
| Section height, in | 4.73 | 4.44 | -0.30 |
| Diameter, in | 24.47 | 24.88 | +0.41 (+1.7%) |
| Circumference, in | 76.9 | 78.2 | +1.3 |
| Revs per mile | 824 | 811 | -14 (-1.6%) |
Fitting 205/55R16 instead of 185/65R15
Within the usual 3% diameter guideline.
- Needs 16 in wheels.
- 20 mm wider. Check rubbing at full lock.
Cars with 185/65R15
Cars with 205/55R16
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