Comparison
235/55 R19 vs 255/35 R20
Compared to 235/55 R19, 255/35 R20 is 54.6 mm shorter and changes the speedometer reading by -7.37%.
Current Tire
235/55R19
New Tire
255/35R20
235/55 R19
255/35 R20
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-54.6 mm
-7.37%
Speedometer at 100
92.6 km/h
-7.37% error
Ground clearance
-27.3 mm
ride height delta
Sidewall change
-40.0 mm
revs/km: 463.7
Permalink for this comparison:
/compare/235-55-r19-vs-255-35-r20Detailed comparison
| Metric | 235/55 R19 | 255/35 R20 | Difference |
|---|---|---|---|
| Overall diameter | 741.1 mm | 686.5 mm | -54.6 mm (-7.37%) |
| Sidewall height | 129.3 mm | 89.3 mm | -40.0 mm |
| Circumference | 2.328 m | 2.157 m | -171.5 mm |
| Revs / km | 429.5 | 463.7 | +34.2 |
| Ground clearance | reference | -27.3 mm | -27.3 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 92.6 km/h | -7.37 km/h |
Verdict: danger
Over 5% diameter difference — likely to affect speedometer accuracy, ABS calibration and gearing. Not recommended without professional review.
Back to
235/55 R19
Back to
255/35 R20