Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 265/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 25.35 (643.8) | 1.37 (34.8) 5.7% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 75.32 (1913.23) | 79.63 (2022.56) | 4.3 (109.33) 5.7% |
| Sidewall Height inches (mm) | 4.49 (114) | 4.17 (106) | -0.31 (-8) -7% |
| Revolutions per mile (km) | 841.17 (522.68) | 795.7 (494.42) | -45.47 (-28.25) -5.4% |
265/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.14 mph (34.03 km/h) |
| 25 mph (40.23 km/h) | 26.43 mph (42.53 km/h) |
| 30 mph (48.28 km/h) | 31.71 mph (51.04 km/h) |
| 35 mph (56.33 km/h) | 37 mph (59.55 km/h) |
| 40 mph (64.37 km/h) | 42.29 mph (68.05 km/h) |
| 45 mph (72.42 km/h) | 47.57 mph (76.56 km/h) |
| 50 mph (80.47 km/h) | 52.86 mph (85.07 km/h) |
| 55 mph (88.51 km/h) | 58.14 mph (93.57 km/h) |
| 60 mph (96.56 km/h) | 63.43 mph (102.08 km/h) |
| 65 mph (104.61 km/h) | 68.71 mph (110.59 km/h) |
| 70 mph (112.65 km/h) | 74 mph (119.09 km/h) |
| 75 mph (120.7 km/h) | 79.29 mph (127.6 km/h) |
| 80 mph (128.75 km/h) | 84.57 mph (136.1 km/h) |
| 85 mph (136.79 km/h) | 89.86 mph (144.61 km/h) |
| 90 mph (144.84 km/h) | 95.14 mph (153.12 km/h) |
| 95 mph (152.89 km/h) | 100.43 mph (161.62 km/h) |
| 100 mph (160.93 km/h) | 105.71 mph (170.13 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 2352 | 2533 | 2645 | 2766 | 2852 | 2947 | 3059 | 3214 | 3369 | 3541 | 3679 | 3929 | 4205 | 4420 | 4558 | 4636 | 4920 | 5316 | 6178 |
Better Fuel Economy Factory Ratios Increased Power
