Comparison
245/55 R16 vs 225/45 R17
Compared to 245/55 R16, 225/45 R17 is 41.6 mm shorter and changes the speedometer reading by -6.15%.
Current Tire
245/55R16
New Tire
225/45R17
245/55 R16
225/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-41.6 mm
-6.15%
Speedometer at 100
93.8 km/h
-6.15% error
Ground clearance
-20.8 mm
ride height delta
Sidewall change
-33.5 mm
revs/km: 501.8
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/compare/245-55-r16-vs-225-45-r17Detailed comparison
| Metric | 245/55 R16 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 675.9 mm | 634.3 mm | -41.6 mm (-6.15%) |
| Sidewall height | 134.8 mm | 101.3 mm | -33.5 mm |
| Circumference | 2.123 m | 1.993 m | -130.7 mm |
| Revs / km | 470.9 | 501.8 | +30.9 |
| Ground clearance | reference | -20.8 mm | -20.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 93.8 km/h | -6.15 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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225/45 R17