Comparison
225/45 R17 vs 255/35 R19
Switching from 225/45 R17 to 255/35 R19 is a plus-2 upgrade that wraps a shorter sidewall around a larger 19-inch wheel. This tire combination noticeably changes overall diameter compared to OEM. Expect a more planted steering feel, at the cost of some of the cushioning a taller sidewall provides.
Indicated speed will drift far enough that recalibration is worth considering. Diameter delta falls in the cautious 3–5% range, where speedometer recalibration and a careful clearance check are worth doing.
TakeCommon upgrade for sportier handling and a tighter wheel-gap look on the same vehicle.
Quick math: 255/35 R19 is 26.8 mm taller than 225/45 R17, shifting the speedometer by +4.23%.
Current Tire
New Tire
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
+26.8 mm
4.23%
Speedometer at 100
104.2 km/h
+4.23% error
Ground clearance
+13.4 mm
ride height delta
Sidewall change
-12.0 mm
revs/km: 481.5
Permalink for this comparison:
/compare/225-45-r17-vs-255-35-r19Detailed comparison
| Metric | 225/45 R17 | 255/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 634.3 mm | 661.1 mm | +26.8 mm (+4.23%) |
| Sidewall height | 101.3 mm | 89.3 mm | -12.0 mm |
| Circumference | 1.993 m | 2.077 m | +84.2 mm |
| Revs / km | 501.8 | 481.5 | -20.3 |
| Ground clearance | reference | +13.4 mm | +13.4 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 104.2 km/h | +4.23 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 104.2 km/h after switching to 255/35 R19 — a +4.23% 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 +13.4 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
225/45 R17
Back to
255/35 R19
Drivers also compare
Closely-related fitments and plus-size swaps for 225/45 R17 and 255/35 R19.
225/40 R19 vs 255/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 0.23%
225/45 R17 vs 255/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 0.24%
205/50 R17 vs 225/45 R17
Wider variation on the same rim — more grip, less clearance.
Δ 0.39%
225/45 R17 vs 245/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 1.02%
255/35 R19 vs 265/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.06%
245/35 R19 vs 255/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.07%
235/40 R19 vs 255/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.42%
225/45 R17 vs 235/45 R17
Wider variation on the same rim — more grip, less clearance.
Δ 1.42%
Related topics