Comparison
235/55 R19 vs 245/35 R20
Compared to 235/55 R19, 245/35 R20 is 61.6 mm shorter and changes the speedometer reading by -8.31%.
Current Tire
235/55R19
New Tire
245/35R20
235/55 R19
245/35 R20
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-61.6 mm
-8.31%
Speedometer at 100
91.7 km/h
-8.31% error
Ground clearance
-30.8 mm
ride height delta
Sidewall change
-43.5 mm
revs/km: 468.4
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/compare/235-55-r19-vs-245-35-r20Detailed comparison
| Metric | 235/55 R19 | 245/35 R20 | Difference |
|---|---|---|---|
| Overall diameter | 741.1 mm | 679.5 mm | -61.6 mm (-8.31%) |
| Sidewall height | 129.3 mm | 85.8 mm | -43.5 mm |
| Circumference | 2.328 m | 2.135 m | -193.5 mm |
| Revs / km | 429.5 | 468.4 | +38.9 |
| Ground clearance | reference | -30.8 mm | -30.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 91.7 km/h | -8.31 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 R19
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245/35 R20