Comparison
265/40 R18 vs 285/35 R19
Going from 265/40 R18 to 285/35 R19 steps up to a 19-inch rim while trimming sidewall to stay near OEM rolling diameter. This wheel and tire pairing shifts overall diameter slightly from OEM. Expect a slight but noticeable shift in indicated speed compared to the original tires. Expect a more planted steering feel, at the cost of some of the cushioning a taller sidewall provides. Overall the swap sits inside the safe ±3% diameter window, so ABS, traction control and gearing behave normally.
TakeCommon upgrade for sportier handling and a tighter wheel-gap look on the same vehicle.
Quick math: 285/35 R19 is 12.9 mm taller than 265/40 R18, shifting the speedometer by +1.93%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
+12.9 mm
1.93%
Speedometer at 100
101.9 km/h
+1.93% error
Ground clearance
+6.4 mm
ride height delta
Sidewall change
-6.3 mm
revs/km: 466.7
Permalink for this comparison:
/compare/265-40-r18-vs-285-35-r19Detailed comparison
| Metric | 265/40 R18 | 285/35 R19 | Difference |
|---|---|---|---|
| Overall diameter | 669.2 mm | 682.1 mm | +12.9 mm (+1.93%) |
| Sidewall height | 106.0 mm | 99.8 mm | -6.3 mm |
| Circumference | 2.102 m | 2.143 m | +40.5 mm |
| Revs / km | 475.7 | 466.7 | -9.0 |
| Ground clearance | reference | +6.4 mm | +6.4 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 101.9 km/h | +1.93 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 101.9 km/h after switching to 285/35 R19 — a +1.93% 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 +6.4 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
265/40 R18
Back to
285/35 R19
Drivers also compare
Closely-related fitments and plus-size swaps for 265/40 R18 and 285/35 R19.
235/45 R18 vs 265/40 R18
Wider variation on the same rim — more grip, less clearance.
Δ 0.07%
225/45 R19 vs 285/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 0.44%
245/40 R19 vs 285/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 0.52%
255/40 R19 vs 285/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 0.66%
275/35 R19 vs 285/35 R19
Wider variation on the same rim — more grip, less clearance.
Δ 1.04%
265/40 R18 vs 275/40 R18
Wider variation on the same rim — more grip, less clearance.
Δ 1.20%
255/40 R18 vs 265/40 R18
Wider variation on the same rim — more grip, less clearance.
Δ 1.21%
245/45 R18 vs 265/40 R18
Wider variation on the same rim — more grip, less clearance.
Δ 1.25%
Related topics