Comparison
235/55 R18 vs 235/35 R19
Compared to 235/55 R18, 235/35 R19 is 68.6 mm shorter and changes the speedometer reading by -9.59%.
Current Tire
235/55R18
New Tire
235/35R19
235/55 R18
235/35 R19
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-68.6 mm
-9.59%
Speedometer at 100
90.4 km/h
-9.59% error
Ground clearance
-34.3 mm
ride height delta
Sidewall change
-47.0 mm
revs/km: 491.9
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/compare/235-55-r18-vs-235-35-r19Detailed comparison
| Metric | 235/55 R18 | 235/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 715.7 mm | 647.1 mm | -68.6 mm (-9.59%) |
| Sidewall height | 129.3 mm | 82.3 mm | -47.0 mm |
| Circumference | 2.248 m | 2.033 m | -215.5 mm |
| Revs / km | 444.8 | 491.9 | +47.1 |
| Ground clearance | reference | -34.3 mm | -34.3 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 90.4 km/h | -9.59 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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235/55 R18
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235/35 R19