Comparison
255/45 R19 vs 255/35 R20
Compared to 255/45 R19, 255/35 R20 is 25.6 mm shorter and changes the speedometer reading by -3.60%.
Current Tire
255/45R19
New Tire
255/35R20
255/45 R19
255/35 R20
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
-25.6 mm
-3.60%
Speedometer at 100
96.4 km/h
-3.60% error
Ground clearance
-12.8 mm
ride height delta
Sidewall change
-25.5 mm
revs/km: 463.7
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/compare/255-45-r19-vs-255-35-r20Detailed comparison
| Metric | 255/45 R19 | 255/35 R20 | Difference |
|---|---|---|---|
| Overall diameter | 712.1 mm | 686.5 mm | -25.6 mm (-3.60%) |
| Sidewall height | 114.8 mm | 89.3 mm | -25.5 mm |
| Circumference | 2.237 m | 2.157 m | -80.4 mm |
| Revs / km | 447.0 | 463.7 | +16.7 |
| Ground clearance | reference | -12.8 mm | -12.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 96.4 km/h | -3.60 km/h |
Verdict: warning
Between 3% and 5% — noticeable speedometer drift; recalibration may be advisable.
Back to
255/45 R19
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255/35 R20