Comparison
225/60 R17 vs 245/40 R19
245/40 R19 is a plus-2 alternative to 225/60 R17 — the bigger wheel shows through a thinner sidewall. This alternative fitment noticeably changes overall diameter compared to OEM. Less sidewall flex usually translates to crisper turn-in and a slightly stiffer ride over rough pavement.
Indicated speed will drift far enough that recalibration is worth considering. The 3–5% diameter gap puts this in caution territory: doable on many cars, but verify clearance and consider recalibration.
TakeCommon upgrade for sportier handling and a tighter wheel-gap look on the same vehicle.
Quick math: 245/40 R19 is 23.2 mm shorter than 225/60 R17, shifting the speedometer by -3.31%.
Current Tire
New Tire
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
-23.2 mm
-3.31%
Speedometer at 100
96.7 km/h
-3.31% error
Ground clearance
-11.6 mm
ride height delta
Sidewall change
-37.0 mm
revs/km: 469.1
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/compare/225-60-r17-vs-245-40-r19Detailed comparison
| Metric | 225/60 R17 | 245/40 R19 | Difference |
|---|---|---|---|
| Overall diameter | 701.8 mm | 678.6 mm | -23.2 mm (-3.31%) |
| Sidewall height | 135.0 mm | 98.0 mm | -37.0 mm |
| Circumference | 2.205 m | 2.132 m | -72.9 mm |
| Revs / km | 453.6 | 469.1 | +15.5 |
| Ground clearance | reference | -11.6 mm | -11.6 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 96.7 km/h | -3.31 km/h |
Verdict: warning
Between 3% and 5% — noticeable speedometer drift; recalibration may be advisable.
Speedometer impact
At a true 100 km/h, your dashboard will read 96.7 km/h after switching to 245/40 R19 — a -3.31% 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 -11.6 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.
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225/60 R17
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245/40 R19
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