Comparison
235/40 R19 vs 245/35 R19
245/35 R19 is a wider variation of 235/40 R19 on the same 19-inch rim, adding 10 mm of tread footprint. This tire combination moves rolling diameter a touch off the original spec.
The speedometer offset is small but measurable; worth keeping in mind if you watch the dash closely. The shorter sidewall gives the tire a firmer, more responsive feel and sharpens steering input. More tread on the ground tends to improve dry grip and stance, with a small fuel-economy and clearance tradeoff. Overall the swap sits inside the safe ±3% diameter window, so ABS, traction control and gearing behave normally.
TakeUseful when extra dry grip and stance matter more than a small fuel-economy hit.
Quick math: 245/35 R19 is 16.5 mm shorter than 235/40 R19, shifting the speedometer by -2.46%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-16.5 mm
-2.46%
Speedometer at 100
97.5 km/h
-2.46% error
Ground clearance
-8.3 mm
ride height delta
Sidewall change
-8.3 mm
revs/km: 486.6
Permalink for this comparison:
/compare/235-40-r19-vs-245-35-r19Detailed comparison
| Metric | 235/40 R19 | 245/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 670.6 mm | 654.1 mm | -16.5 mm (-2.46%) |
| Sidewall height | 94.0 mm | 85.8 mm | -8.3 mm |
| Circumference | 2.107 m | 2.055 m | -51.8 mm |
| Revs / km | 474.7 | 486.6 | +12.0 |
| Ground clearance | reference | -8.3 mm | -8.3 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 97.5 km/h | -2.46 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 97.5 km/h after switching to 245/35 R19 — a -2.46% 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 -8.3 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
235/40 R19
Back to
245/35 R19
Drivers also compare
Closely-related fitments and plus-size swaps for 235/40 R19 and 245/35 R19.
235/40 R19 vs 265/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 0.37%
235/40 R19 vs 275/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 0.67%
245/35 R19 vs 255/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.07%
235/35 R19 vs 245/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.08%
235/40 R19 vs 245/40 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.19%
225/40 R19 vs 235/40 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.21%
225/40 R19 vs 245/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.28%
235/40 R19 vs 255/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.42%
Related topics