Comparison
325/55 R16 vs 235/60 R18
Compared to 325/55 R16, 235/60 R18 is 24.7 mm shorter and changes the speedometer reading by -3.23%.
Current Tire
325/55R16
New Tire
235/60R18
325/55 R16
235/60 R18
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
-24.7 mm
-3.23%
Speedometer at 100
96.8 km/h
-3.23% error
Ground clearance
-12.3 mm
ride height delta
Sidewall change
-37.8 mm
revs/km: 430.6
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/compare/325-55-r16-vs-235-60-r18Detailed comparison
| Metric | 325/55 R16 | 235/60 R18 | Difference |
|---|---|---|---|
| Overall diameter | 763.9 mm | 739.2 mm | -24.7 mm (-3.23%) |
| Sidewall height | 178.8 mm | 141.0 mm | -37.8 mm |
| Circumference | 2.400 m | 2.322 m | -77.6 mm |
| Revs / km | 416.7 | 430.6 | +13.9 |
| Ground clearance | reference | -12.3 mm | -12.3 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 96.8 km/h | -3.23 km/h |
Verdict: warning
Between 3% and 5% — noticeable speedometer drift; recalibration may be advisable.
Back to
325/55 R16
Back to
235/60 R18