245/75R16 vs 265/75R16 Side-by-side tire size comparison with specs and compatibility
This tire swap is between 3-5% diameter difference. Check for fender clearance and be aware of speedometer error. May require recalibration.
Full Specifications Comparison
| Specification | 245/75R16 | 265/75R16 | Difference |
|---|---|---|---|
| Overall Diameter | 773.9 mm (30.5") | 803.9 mm (31.6") | +30 mm |
| Section Width | 245 mm (9.6") | 265 mm (10.4") | +20 mm |
| Sidewall Height | 183.8 mm | 198.8 mm | +15 mm |
| Circumference | 2431.3 mm | 2525.5 mm | +94.2 mm |
| Revolutions/Mile | 662 | 637 | -25 |
| Aspect Ratio | 75% | 75% | 0% |
| Rim Diameter | 16" | 16" | 0" |
Key Impact Summary
Speedometer Correction Table
When switching from 245/75R16 to 265/75R16, your speedometer will under-read. Here is the correction at common speeds:
| Speedometer Shows | Actual Speed (mph) | Difference |
|---|---|---|
| 30 mph | 31.2 mph | +1.2 mph |
| 40 mph | 41.6 mph | +1.6 mph |
| 50 mph | 51.9 mph | +1.9 mph |
| 60 mph | 62.3 mph | +2.3 mph |
| 70 mph | 72.7 mph | +2.7 mph |
| 80 mph | 83.1 mph | +3.1 mph |
| 90 mph | 93.5 mph | +3.5 mph |
| 100 mph | 103.9 mph | +3.9 mph |
| 110 mph | 114.3 mph | +4.3 mph |
| 120 mph | 124.7 mph | +4.7 mph |
What This Swap Means
Wider tires (265/75R16): The 20mm wider contact patch provides better grip in dry conditions and improved cornering stability. However, wider tires increase rolling resistance slightly, which may affect fuel economy by 1-2%. They are also more susceptible to hydroplaning in wet conditions.
Taller sidewall: The 15.0mm increase in sidewall height provides a more comfortable ride by absorbing more road imperfections. Taller sidewalls also offer better protection against pothole damage to wheels. The trade-off is slightly less responsive steering feel.
Ground clearance: Increases by 15mm, providing slightly better approach angles for off-road driving and speed bump clearance.