Comparison
225/40 R19 vs 225/55 R17
225/55 R17 drops the rim from 19 to 17 inches versus 225/40 R19, trading wheel size for taller sidewall. This wheel and tire pairing moves rolling diameter a touch off the original spec.
Expect a slight but noticeable shift in indicated speed compared to the original tires. The taller sidewall adds cushioning over potholes and rougher roads, with a softer overall ride. The smaller wheel is also lighter and easier to find affordable winter rubber for. Overall the swap sits inside the safe ±3% diameter window, so ABS, traction control and gearing behave normally.
TakeTypical choice for a dedicated winter or off-road setup where extra sidewall pays off.
Quick math: 225/55 R17 is 16.7 mm taller than 225/40 R19, shifting the speedometer by +2.52%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
+16.7 mm
2.52%
Speedometer at 100
102.5 km/h
+2.52% error
Ground clearance
+8.4 mm
ride height delta
Sidewall change
+33.8 mm
revs/km: 468.6
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/compare/225-40-r19-vs-225-55-r17Detailed comparison
| Metric | 225/40 R19 | 225/55 R17 | Difference |
|---|---|---|---|
| Overall diameter | 662.6 mm | 679.3 mm | +16.7 mm (+2.52%) |
| Sidewall height | 90.0 mm | 123.8 mm | +33.8 mm |
| Circumference | 2.082 m | 2.134 m | +52.5 mm |
| Revs / km | 480.4 | 468.6 | -11.8 |
| Ground clearance | reference | +8.4 mm | +8.4 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 102.5 km/h | +2.52 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 102.5 km/h after switching to 225/55 R17 — a +2.52% 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 +8.4 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.
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225/40 R19
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225/55 R17
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