Comparison
245/55 R16 vs 215/40 R17
Compared to 245/55 R16, 215/40 R17 is 72.1 mm shorter and changes the speedometer reading by -10.67%.
Current Tire
245/55R16
New Tire
215/40R17
245/55 R16
215/40 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-72.1 mm
-10.67%
Speedometer at 100
89.3 km/h
-10.67% error
Ground clearance
-36.1 mm
ride height delta
Sidewall change
-48.8 mm
revs/km: 527.2
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/compare/245-55-r16-vs-215-40-r17Detailed comparison
| Metric | 245/55 R16 | 215/40 R17 | Difference |
|---|---|---|---|
| Overall diameter | 675.9 mm | 603.8 mm | -72.1 mm (-10.67%) |
| Sidewall height | 134.8 mm | 86.0 mm | -48.8 mm |
| Circumference | 2.123 m | 1.897 m | -226.5 mm |
| Revs / km | 470.9 | 527.2 | +56.2 |
| Ground clearance | reference | -36.1 mm | -36.1 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 89.3 km/h | -10.67 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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245/55 R16
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215/40 R17