Comparison
225/55 R17 vs 235/40 R19
Plus-sizing from 225/55 R17 to 235/40 R19 keeps overall diameter close to factory while opening room for a larger 19-inch wheel. This alternative fitment keeps overall diameter very close to stock. Expect a more planted steering feel, at the cost of some of the cushioning a taller sidewall provides.
Dashboard speed shifts only marginally — within the noise of normal OEM tolerance. Overall the swap sits inside the safe ±3% diameter window, so ABS, traction control and gearing behave normally.
TakeCommon upgrade for sportier handling and a tighter wheel-gap look on the same vehicle.
Quick math: 235/40 R19 is 8.7 mm shorter than 225/55 R17, shifting the speedometer by -1.28%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-8.7 mm
-1.28%
Speedometer at 100
98.7 km/h
-1.28% error
Ground clearance
-4.4 mm
ride height delta
Sidewall change
-29.8 mm
revs/km: 474.7
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/compare/225-55-r17-vs-235-40-r19Detailed comparison
| Metric | 225/55 R17 | 235/40 R19 | Difference |
|---|---|---|---|
| Overall diameter | 679.3 mm | 670.6 mm | -8.7 mm (-1.28%) |
| Sidewall height | 123.8 mm | 94.0 mm | -29.8 mm |
| Circumference | 2.134 m | 2.107 m | -27.3 mm |
| Revs / km | 468.6 | 474.7 | +6.1 |
| Ground clearance | reference | -4.4 mm | -4.4 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 98.7 km/h | -1.28 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 98.7 km/h after switching to 235/40 R19 — a -1.28% 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 -4.4 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.
Back to
225/55 R17
Back to
235/40 R19
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