Comparison
165/55 R16 vs 245/35 R18
Compared to 165/55 R16, 245/35 R18 is 40.8 mm taller and changes the speedometer reading by +6.94%.
Current Tire
165/55R16
New Tire
245/35R18
165/55 R16
245/35 R18
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
+40.8 mm
6.94%
Speedometer at 100
106.9 km/h
+6.94% error
Ground clearance
+20.4 mm
ride height delta
Sidewall change
-5.0 mm
revs/km: 506.3
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/compare/165-55-r16-vs-245-35-r18Detailed comparison
| Metric | 165/55 R16 | 245/35 R18 | Difference |
|---|---|---|---|
| Overall diameter | 587.9 mm | 628.7 mm | +40.8 mm (+6.94%) |
| Sidewall height | 90.8 mm | 85.8 mm | -5.0 mm |
| Circumference | 1.847 m | 1.975 m | +128.2 mm |
| Revs / km | 541.4 | 506.3 | -35.1 |
| Ground clearance | reference | +20.4 mm | +20.4 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 106.9 km/h | +6.94 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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165/55 R16
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245/35 R18