Comparison
245/35 R19 vs 275/35 R19
Stepping from 245/35 R19 to 275/35 R19 keeps the 19-inch wheel but widens the section by 30 mm. This setup swings rolling diameter far enough to feel on the road.
The speedometer error is noticeable and may warrant a recalibration if you rely on indicated speed. More tread on the ground tends to improve dry grip and stance, with a small fuel-economy and clearance tradeoff. Diameter delta falls in the cautious 3–5% range, where speedometer recalibration and a careful clearance check are worth doing.
TakeReasonable performance-leaning swap as long as fender and suspension clearance check out.
Quick math: 275/35 R19 is 21.0 mm taller than 245/35 R19, shifting the speedometer by +3.21%.
Current Tire
New Tire
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
+21.0 mm
3.21%
Speedometer at 100
103.2 km/h
+3.21% error
Ground clearance
+10.5 mm
ride height delta
Sidewall change
+10.5 mm
revs/km: 471.5
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/compare/245-35-r19-vs-275-35-r19Detailed comparison
| Metric | 245/35 R19 | 275/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 654.1 mm | 675.1 mm | +21.0 mm (+3.21%) |
| Sidewall height | 85.8 mm | 96.3 mm | +10.5 mm |
| Circumference | 2.055 m | 2.121 m | +66.0 mm |
| Revs / km | 486.6 | 471.5 | -15.1 |
| Ground clearance | reference | +10.5 mm | +10.5 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 103.2 km/h | +3.21 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 103.2 km/h after switching to 275/35 R19 — a +3.21% 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 +10.5 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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245/35 R19
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275/35 R19
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