Comparison
215/55 R17 vs 225/50 R17
225/50 R17 is a wider variation of 215/55 R17 on the same 17-inch rim, adding 10 mm of tread footprint. This tire combination trims or stretches rolling diameter by a small margin. Less sidewall flex usually translates to crisper turn-in and a slightly stiffer ride over rough pavement.
Expect a slight but noticeable shift in indicated speed compared to the original tires. Overall the swap sits inside the safe ±3% diameter window, so ABS, traction control and gearing behave normally.
TakeUseful when extra dry grip and stance matter more than a small fuel-economy hit.
Quick math: 225/50 R17 is 11.5 mm shorter than 215/55 R17, shifting the speedometer by -1.72%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-11.5 mm
-1.72%
Speedometer at 100
98.3 km/h
-1.72% error
Ground clearance
-5.8 mm
ride height delta
Sidewall change
-5.8 mm
revs/km: 484.6
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/compare/215-55-r17-vs-225-50-r17Detailed comparison
| Metric | 215/55 R17 | 225/50 R17 | Difference |
|---|---|---|---|
| Overall diameter | 668.3 mm | 656.8 mm | -11.5 mm (-1.72%) |
| Sidewall height | 118.3 mm | 112.5 mm | -5.8 mm |
| Circumference | 2.100 m | 2.063 m | -36.1 mm |
| Revs / km | 476.3 | 484.6 | +8.3 |
| Ground clearance | reference | -5.8 mm | -5.8 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 98.3 km/h | -1.72 km/h |
Verdict: excellent
Within ±3% — speedometer, ABS and traction control should behave normally.
Speedometer impact
At a true 100 km/h, your dashboard will read 98.3 km/h after switching to 225/50 R17 — a -1.72% offset. Use the speedometer error calculator to recheck for other indicated speeds, and the speedometer error guide for the full background.
Ground clearance change
The new tire's half-diameter changes ride height by -5.8 mm. Small differences are absorbed by suspension travel, but anything beyond ±10 mm can affect headlight aim, fender clearance and bump-stop margin. See the plus-sizing guide before committing.
Back to
215/55 R17
Back to
225/50 R17
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