Comparison
225/55 R17 vs 225/45 R17
Compared to 225/55 R17, 225/45 R17 is 45.0 mm shorter and changes the speedometer reading by -6.62%.
Current Tire
225/55R17
New Tire
225/45R17
225/55 R17
225/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-45.0 mm
-6.62%
Speedometer at 100
93.4 km/h
-6.62% error
Ground clearance
-22.5 mm
ride height delta
Sidewall change
-22.5 mm
revs/km: 501.8
Permalink for this comparison:
/compare/225-55-r17-vs-225-45-r17Detailed comparison
| Metric | 225/55 R17 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 679.3 mm | 634.3 mm | -45.0 mm (-6.62%) |
| Sidewall height | 123.8 mm | 101.3 mm | -22.5 mm |
| Circumference | 2.134 m | 1.993 m | -141.4 mm |
| Revs / km | 468.6 | 501.8 | +33.2 |
| Ground clearance | reference | -22.5 mm | -22.5 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 93.4 km/h | -6.62 km/h |
Verdict: danger
Over 5% diameter difference — likely to affect speedometer accuracy, ABS calibration and gearing. Not recommended without professional review.
Back to
225/55 R17
Back to
225/45 R17