Comparison
325/55 R16 vs 205/45 R17
Compared to 325/55 R16, 205/45 R17 is 147.6 mm shorter and changes the speedometer reading by -19.32%.
Current Tire
325/55R16
New Tire
205/45R17
325/55 R16
205/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-147.6 mm
-19.32%
Speedometer at 100
80.7 km/h
-19.32% error
Ground clearance
-73.8 mm
ride height delta
Sidewall change
-86.5 mm
revs/km: 516.5
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/compare/325-55-r16-vs-205-45-r17Detailed comparison
| Metric | 325/55 R16 | 205/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 763.9 mm | 616.3 mm | -147.6 mm (-19.32%) |
| Sidewall height | 178.8 mm | 92.3 mm | -86.5 mm |
| Circumference | 2.400 m | 1.936 m | -463.7 mm |
| Revs / km | 416.7 | 516.5 | +99.8 |
| Ground clearance | reference | -73.8 mm | -73.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 80.7 km/h | -19.32 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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205/45 R17