Comparison
235/55 R16 vs 225/45 R17
Compared to 235/55 R16, 225/45 R17 is 30.6 mm shorter and changes the speedometer reading by -4.60%.
Current Tire
235/55R16
New Tire
225/45R17
235/55 R16
225/45 R17
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
-30.6 mm
-4.60%
Speedometer at 100
95.4 km/h
-4.60% error
Ground clearance
-15.3 mm
ride height delta
Sidewall change
-28.0 mm
revs/km: 501.8
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/compare/235-55-r16-vs-225-45-r17Detailed comparison
| Metric | 235/55 R16 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 664.9 mm | 634.3 mm | -30.6 mm (-4.60%) |
| Sidewall height | 129.3 mm | 101.3 mm | -28.0 mm |
| Circumference | 2.089 m | 1.993 m | -96.1 mm |
| Revs / km | 478.7 | 501.8 | +23.1 |
| Ground clearance | reference | -15.3 mm | -15.3 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 95.4 km/h | -4.60 km/h |
Verdict: warning
Between 3% and 5% — noticeable speedometer drift; recalibration may be advisable.
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235/55 R16
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225/45 R17