Comparison
225/65 R17 vs 225/45 R17
Compared to 225/65 R17, 225/45 R17 is 90.0 mm shorter and changes the speedometer reading by -12.43%.
Current Tire
225/65R17
New Tire
225/45R17
225/65 R17
225/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-90.0 mm
-12.43%
Speedometer at 100
87.6 km/h
-12.43% error
Ground clearance
-45.0 mm
ride height delta
Sidewall change
-45.0 mm
revs/km: 501.8
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/compare/225-65-r17-vs-225-45-r17Detailed comparison
| Metric | 225/65 R17 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 724.3 mm | 634.3 mm | -90.0 mm (-12.43%) |
| Sidewall height | 146.3 mm | 101.3 mm | -45.0 mm |
| Circumference | 2.275 m | 1.993 m | -282.7 mm |
| Revs / km | 439.5 | 501.8 | +62.4 |
| Ground clearance | reference | -45.0 mm | -45.0 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 87.6 km/h | -12.43 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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225/65 R17
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225/45 R17