Comparison
245/70 R16 vs 225/45 R17
Compared to 245/70 R16, 225/45 R17 is 115.1 mm shorter and changes the speedometer reading by -15.36%.
Current Tire
245/70R16
New Tire
225/45R17
245/70 R16
225/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-115.1 mm
-15.36%
Speedometer at 100
84.6 km/h
-15.36% error
Ground clearance
-57.6 mm
ride height delta
Sidewall change
-70.3 mm
revs/km: 501.8
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/compare/245-70-r16-vs-225-45-r17Detailed comparison
| Metric | 245/70 R16 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 749.4 mm | 634.3 mm | -115.1 mm (-15.36%) |
| Sidewall height | 171.5 mm | 101.3 mm | -70.3 mm |
| Circumference | 2.354 m | 1.993 m | -361.6 mm |
| Revs / km | 424.8 | 501.8 | +77.1 |
| Ground clearance | reference | -57.6 mm | -57.6 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 84.6 km/h | -15.36 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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245/70 R16
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225/45 R17