Comparison
295/35 R21 vs 225/45 R17
Compared to 295/35 R21, 225/45 R17 is 105.6 mm shorter and changes the speedometer reading by -14.27%.
Current Tire
295/35R21
New Tire
225/45R17
295/35 R21
225/45 R17
Ground line · scaled comparison
Not Recommended
Over 5% — speedometer & ABS may misread
Diameter change
-105.6 mm
-14.27%
Speedometer at 100
85.7 km/h
-14.27% error
Ground clearance
-52.8 mm
ride height delta
Sidewall change
-2.0 mm
revs/km: 501.8
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/compare/295-35-r21-vs-225-45-r17Detailed comparison
| Metric | 295/35 R21 | 225/45 R17 | Difference |
|---|---|---|---|
| Overall diameter | 739.9 mm | 634.3 mm | -105.6 mm (-14.27%) |
| Sidewall height | 103.3 mm | 101.3 mm | -2.0 mm |
| Circumference | 2.324 m | 1.993 m | -331.8 mm |
| Revs / km | 430.2 | 501.8 | +71.6 |
| Ground clearance | reference | -52.8 mm | -52.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 85.7 km/h | -14.27 km/h |
Verdict: danger
Over 5% diameter difference — likely to affect speedometer accuracy, ABS calibration and gearing. Not recommended without professional review.
Back to
295/35 R21
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225/45 R17