Comparison
215/55 R17 vs 225/45 R17
Compared to 215/55 R17, 225/45 R17 is 34.0 mm shorter and changes the speedometer reading by -5.09%.
Current Tire
215/55R17
New Tire
225/45R17
215/55 R17
225/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-34.0 mm
-5.09%
Speedometer at 100
94.9 km/h
-5.09% error
Ground clearance
-17.0 mm
ride height delta
Sidewall change
-17.0 mm
revs/km: 501.8
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/compare/215-55-r17-vs-225-45-r17Detailed comparison
| Metric | 215/55 R17 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 668.3 mm | 634.3 mm | -34.0 mm (-5.09%) |
| Sidewall height | 118.3 mm | 101.3 mm | -17.0 mm |
| Circumference | 2.100 m | 1.993 m | -106.8 mm |
| Revs / km | 476.3 | 501.8 | +25.5 |
| Ground clearance | reference | -17.0 mm | -17.0 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 94.9 km/h | -5.09 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 R17
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225/45 R17