Comparison
245/55 R16 vs 205/50 R17
Compared to 245/55 R16, 205/50 R17 is 39.1 mm shorter and changes the speedometer reading by -5.78%.
Current Tire
245/55R16
New Tire
205/50R17
245/55 R16
205/50 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-39.1 mm
-5.78%
Speedometer at 100
94.2 km/h
-5.78% error
Ground clearance
-19.6 mm
ride height delta
Sidewall change
-32.3 mm
revs/km: 499.9
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/compare/245-55-r16-vs-205-50-r17Detailed comparison
| Metric | 245/55 R16 | 205/50 R17 | Difference |
|---|---|---|---|
| Overall diameter | 675.9 mm | 636.8 mm | -39.1 mm (-5.78%) |
| Sidewall height | 134.8 mm | 102.5 mm | -32.3 mm |
| Circumference | 2.123 m | 2.001 m | -122.8 mm |
| Revs / km | 470.9 | 499.9 | +28.9 |
| Ground clearance | reference | -19.6 mm | -19.6 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 94.2 km/h | -5.78 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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245/55 R16
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205/50 R17