Comparison
255/35 R20 vs 265/35 R19
265/35 R19 drops the rim from 20 to 19 inches versus 255/35 R20, trading wheel size for taller sidewall. This wheel and tire pairing moves rolling diameter a touch off the original spec. Extra width broadens the footprint for more grip, but check inner liner and strut clearance before fitting.
The speedometer offset is small but measurable; worth keeping in mind if you watch the dash closely. 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: 265/35 R19 is 18.4 mm shorter than 255/35 R20, shifting the speedometer by -2.68%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-18.4 mm
-2.68%
Speedometer at 100
97.3 km/h
-2.68% error
Ground clearance
-9.2 mm
ride height delta
Sidewall change
+3.5 mm
revs/km: 476.4
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/compare/255-35-r20-vs-265-35-r19Detailed comparison
| Metric | 255/35 R20 | 265/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 686.5 mm | 668.1 mm | -18.4 mm (-2.68%) |
| Sidewall height | 89.3 mm | 92.8 mm | +3.5 mm |
| Circumference | 2.157 m | 2.099 m | -57.8 mm |
| Revs / km | 463.7 | 476.4 | +12.8 |
| Ground clearance | reference | -9.2 mm | -9.2 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 97.3 km/h | -2.68 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 97.3 km/h after switching to 265/35 R19 — a -2.68% 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 -9.2 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
255/35 R20
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265/35 R19
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