Comparison
215/55 R16 vs 205/40 R17
Compared to 215/55 R16, 205/40 R17 is 47.1 mm shorter and changes the speedometer reading by -7.33%.
Current Tire
215/55R16
New Tire
205/40R17
215/55 R16
205/40 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-47.1 mm
-7.33%
Speedometer at 100
92.7 km/h
-7.33% error
Ground clearance
-23.6 mm
ride height delta
Sidewall change
-36.3 mm
revs/km: 534.3
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/compare/215-55-r16-vs-205-40-r17Detailed comparison
| Metric | 215/55 R16 | 205/40 R17 | Difference |
|---|---|---|---|
| Overall diameter | 642.9 mm | 595.8 mm | -47.1 mm (-7.33%) |
| Sidewall height | 118.3 mm | 82.0 mm | -36.3 mm |
| Circumference | 2.020 m | 1.872 m | -148.0 mm |
| Revs / km | 495.1 | 534.3 | +39.1 |
| Ground clearance | reference | -23.6 mm | -23.6 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 92.7 km/h | -7.33 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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205/40 R17