255/40R19 vs 265/35R19Tire Size Comparison
The 2.7% diameter difference is within the accepted 3% tolerance.
Comparison Details
Speedometer Correction
When switching from 255/40R19 to 265/35R19, your speedometer will differ from actual speed.
| Speedometer | Actual Speed | Difference |
|---|---|---|
| 30 km/h | 29.2 km/h | -0.8 km/h |
| 40 km/h | 38.9 km/h | -1.1 km/h |
| 50 km/h | 48.7 km/h | -1.3 km/h |
| 60 km/h | 58.4 km/h | -1.6 km/h |
| 70 km/h | 68.1 km/h | -1.9 km/h |
| 80 km/h | 77.8 km/h | -2.2 km/h |
| 90 km/h | 87.6 km/h | -2.4 km/h |
| 100 km/h | 97.3 km/h | -2.7 km/h |
| 110 km/h | 107.0 km/h | -3.0 km/h |
| 120 km/h | 116.8 km/h | -3.2 km/h |
| 130 km/h | 126.5 km/h | -3.5 km/h |
Vehicles Using These Sizes
Vehicles with 255/40R19
Individual Tire Size Details
Practical Guidance
Switching from 255/40R19 to 265/35R19 is within the industry-accepted 3% diameter tolerance. Your speedometer, ABS, and traction control should function normally. Both sizes fit the same 19-inch rim, so no wheel change is needed.
The 3% diameter tolerance is a widely accepted industry guideline referenced by the ETRTO and most vehicle manufacturers. When in doubt, consult your vehicle's owner's manual or a qualified tire professional. For U.S. tire safety standards and recalls, see the NHTSA Tire Safety page.
Frequently Asked Questions
Safe. The overall diameter differs by -2.69%, width changes by 10mm.
Speedometer error will be -2.69%. At an indicated 100 km/h, actual speed is about 97.3 km/h.
Ground clearance changes by -9.2mm per side.