Comparison
235/55 R18 vs 225/35 R19
Compared to 235/55 R18, 225/35 R19 is 75.6 mm shorter and changes the speedometer reading by -10.56%.
Current Tire
235/55R18
New Tire
225/35R19
235/55 R18
225/35 R19
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-75.6 mm
-10.56%
Speedometer at 100
89.4 km/h
-10.56% error
Ground clearance
-37.8 mm
ride height delta
Sidewall change
-50.5 mm
revs/km: 497.3
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/compare/235-55-r18-vs-225-35-r19Detailed comparison
| Metric | 235/55 R18 | 225/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 715.7 mm | 640.1 mm | -75.6 mm (-10.56%) |
| Sidewall height | 129.3 mm | 78.8 mm | -50.5 mm |
| Circumference | 2.248 m | 2.011 m | -237.5 mm |
| Revs / km | 444.8 | 497.3 | +52.5 |
| Ground clearance | reference | -37.8 mm | -37.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 89.4 km/h | -10.56 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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225/35 R19