Comparison
215/55 R16 vs 215/40 R17
Compared to 215/55 R16, 215/40 R17 is 39.1 mm shorter and changes the speedometer reading by -6.08%.
Current Tire
215/55R16
New Tire
215/40R17
215/55 R16
215/40 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-39.1 mm
-6.08%
Speedometer at 100
93.9 km/h
-6.08% error
Ground clearance
-19.6 mm
ride height delta
Sidewall change
-32.3 mm
revs/km: 527.2
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/compare/215-55-r16-vs-215-40-r17Detailed comparison
| Metric | 215/55 R16 | 215/40 R17 | Difference |
|---|---|---|---|
| Overall diameter | 642.9 mm | 603.8 mm | -39.1 mm (-6.08%) |
| Sidewall height | 118.3 mm | 86.0 mm | -32.3 mm |
| Circumference | 2.020 m | 1.897 m | -122.8 mm |
| Revs / km | 495.1 | 527.2 | +32.1 |
| Ground clearance | reference | -19.6 mm | -19.6 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 93.9 km/h | -6.08 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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215/55 R16
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215/40 R17