Comparison
315/55 R16 vs 215/45 R17
Compared to 315/55 R16, 215/45 R17 is 127.6 mm shorter and changes the speedometer reading by -16.95%.
Current Tire
315/55R16
New Tire
215/45R17
315/55 R16
215/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-127.6 mm
-16.95%
Speedometer at 100
83.1 km/h
-16.95% error
Ground clearance
-63.8 mm
ride height delta
Sidewall change
-76.5 mm
revs/km: 509.1
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/compare/315-55-r16-vs-215-45-r17Detailed comparison
| Metric | 315/55 R16 | 215/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 752.9 mm | 625.3 mm | -127.6 mm (-16.95%) |
| Sidewall height | 173.3 mm | 96.8 mm | -76.5 mm |
| Circumference | 2.365 m | 1.964 m | -400.9 mm |
| Revs / km | 422.8 | 509.1 | +86.3 |
| Ground clearance | reference | -63.8 mm | -63.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 83.1 km/h | -16.95 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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315/55 R16
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215/45 R17