Comparison
215/65 R16 vs 215/40 R17
Compared to 215/65 R16, 215/40 R17 is 82.1 mm shorter and changes the speedometer reading by -11.97%.
Current Tire
215/65R16
New Tire
215/40R17
215/65 R16
215/40 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-82.1 mm
-11.97%
Speedometer at 100
88.0 km/h
-11.97% error
Ground clearance
-41.1 mm
ride height delta
Sidewall change
-53.8 mm
revs/km: 527.2
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/compare/215-65-r16-vs-215-40-r17Detailed comparison
| Metric | 215/65 R16 | 215/40 R17 | Difference |
|---|---|---|---|
| Overall diameter | 685.9 mm | 603.8 mm | -82.1 mm (-11.97%) |
| Sidewall height | 139.8 mm | 86.0 mm | -53.8 mm |
| Circumference | 2.155 m | 1.897 m | -257.9 mm |
| Revs / km | 464.1 | 527.2 | +63.1 |
| Ground clearance | reference | -41.1 mm | -41.1 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 88.0 km/h | -11.97 km/h |
Verdict: danger
Over 5% diameter difference — likely to affect speedometer accuracy, ABS calibration and gearing. Not recommended without professional review.
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215/65 R16
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215/40 R17