Comparison
325/55 R16 vs 215/45 R17
Compared to 325/55 R16, 215/45 R17 is 138.6 mm shorter and changes the speedometer reading by -18.14%.
Current Tire
325/55R16
New Tire
215/45R17
325/55 R16
215/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-138.6 mm
-18.14%
Speedometer at 100
81.9 km/h
-18.14% error
Ground clearance
-69.3 mm
ride height delta
Sidewall change
-82.0 mm
revs/km: 509.1
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/compare/325-55-r16-vs-215-45-r17Detailed comparison
| Metric | 325/55 R16 | 215/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 763.9 mm | 625.3 mm | -138.6 mm (-18.14%) |
| Sidewall height | 178.8 mm | 96.8 mm | -82.0 mm |
| Circumference | 2.400 m | 1.964 m | -435.4 mm |
| Revs / km | 416.7 | 509.1 | +92.4 |
| Ground clearance | reference | -69.3 mm | -69.3 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 81.9 km/h | -18.14 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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325/55 R16
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215/45 R17