215/85R16 vs 255/65R17 tire size
255/65R17 vs 215/85R16, diameter
-1.1% shorter
- Speedometer
- 60.7 mph
- At a true 60 mph
- Diameter
- 30.05 in
- Was 30.39 in
- Revs per mile
- 671
- Was 664
- 3% guideline
- Within
Car built for 215/85R16, now on 255/65R17.
215/85R16 and 255/65R17
| Measure | 215/85R16 | 255/65R17 | Difference |
|---|---|---|---|
| Width, mm | 215 | 255 | +40 |
| Sidewall, % of width | 85 | 65 | -20 |
| Rim, in | 16 | 17 | +1 |
| Section height, in | 7.19 | 6.53 | -0.67 |
| Diameter, in | 30.39 | 30.05 | -0.34 (-1.1%) |
| Circumference, in | 95.5 | 94.4 | -1.1 |
| Revs per mile | 664 | 671 | +7 (+1.1%) |
Fitting 255/65R17 instead of 215/85R16
Within the usual 3% diameter guideline.
- Needs 17 in wheels.
- 40 mm wider. Check rubbing at full lock.
- Shorter sidewall: 0.7 in less.
Cars with 215/85R16
Cars with 255/65R17
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