Comparison
225/60 R17 vs 255/40 R19
Plus-sizing from 225/60 R17 to 255/40 R19 keeps overall diameter close to factory while opening room for a larger 19-inch wheel. This setup trims or stretches rolling diameter by a small margin. The speedometer offset is small but measurable; worth keeping in mind if you watch the dash closely. Expect a more planted steering feel, at the cost of some of the cushioning a taller sidewall provides. Diameter change stays inside the conservative ±3% safety window — an OEM-safe fitment on most vehicles.
TakeCommon upgrade for sportier handling and a tighter wheel-gap look on the same vehicle.
Quick math: 255/40 R19 is 15.2 mm shorter than 225/60 R17, shifting the speedometer by -2.17%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-15.2 mm
-2.17%
Speedometer at 100
97.8 km/h
-2.17% error
Ground clearance
-7.6 mm
ride height delta
Sidewall change
-33.0 mm
revs/km: 463.6
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/compare/225-60-r17-vs-255-40-r19Detailed comparison
| Metric | 225/60 R17 | 255/40 R19 | Difference |
|---|---|---|---|
| Overall diameter | 701.8 mm | 686.6 mm | -15.2 mm (-2.17%) |
| Sidewall height | 135.0 mm | 102.0 mm | -33.0 mm |
| Circumference | 2.205 m | 2.157 m | -47.8 mm |
| Revs / km | 453.6 | 463.6 | +10.0 |
| Ground clearance | reference | -7.6 mm | -7.6 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 97.8 km/h | -2.17 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 97.8 km/h after switching to 255/40 R19 — a -2.17% 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 -7.6 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
225/60 R17
Back to
255/40 R19
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