Comparison
245/45 R18 vs 225/35 R19
Compared to 245/45 R18, 225/35 R19 is 37.6 mm shorter and changes the speedometer reading by -5.55%.
Current Tire
245/45R18
New Tire
225/35R19
245/45 R18
225/35 R19
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-37.6 mm
-5.55%
Speedometer at 100
94.5 km/h
-5.55% error
Ground clearance
-18.8 mm
ride height delta
Sidewall change
-31.5 mm
revs/km: 497.3
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/compare/245-45-r18-vs-225-35-r19Detailed comparison
| Metric | 245/45 R18 | 225/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 677.7 mm | 640.1 mm | -37.6 mm (-5.55%) |
| Sidewall height | 110.3 mm | 78.8 mm | -31.5 mm |
| Circumference | 2.129 m | 2.011 m | -118.1 mm |
| Revs / km | 469.7 | 497.3 | +27.6 |
| Ground clearance | reference | -18.8 mm | -18.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 94.5 km/h | -5.55 km/h |
Verdict: danger
Over 5% diameter difference — likely to affect speedometer accuracy, ABS calibration and gearing. Not recommended without professional review.
Back to
245/45 R18
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225/35 R19