Comparison
245/35 R20 vs 265/35 R19
Minus-sizing from 245/35 R20 to 265/35 R19 pairs a smaller 19-inch wheel with more rubber between the rim and road. This tire combination 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. More tread on the ground tends to improve dry grip and stance, with a small fuel-economy and clearance tradeoff. Diameter change stays inside the conservative ±3% safety window — an OEM-safe fitment on most vehicles.
TakePractical direction for winter wheels, chains, or rougher pavement where cushioning matters.
Quick math: 265/35 R19 is 11.4 mm shorter than 245/35 R20, shifting the speedometer by -1.68%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-11.4 mm
-1.68%
Speedometer at 100
98.3 km/h
-1.68% error
Ground clearance
-5.7 mm
ride height delta
Sidewall change
+7.0 mm
revs/km: 476.4
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/compare/245-35-r20-vs-265-35-r19Detailed comparison
| Metric | 245/35 R20 | 265/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 679.5 mm | 668.1 mm | -11.4 mm (-1.68%) |
| Sidewall height | 85.8 mm | 92.8 mm | +7.0 mm |
| Circumference | 2.135 m | 2.099 m | -35.8 mm |
| Revs / km | 468.4 | 476.4 | +8.0 |
| Ground clearance | reference | -5.7 mm | -5.7 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 98.3 km/h | -1.68 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 98.3 km/h after switching to 265/35 R19 — a -1.68% 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 -5.7 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
245/35 R20
Back to
265/35 R19
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