Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/66-17 | 315/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.77 (781.6) | 33.12 (841.3) | 2.35 (59.7) 7.6% |
| Width inches (mm) | 10.43 (265) | 12.4 (315) | 1.97 (50) 18.9% |
| Circum. inches (mm) | 96.67 (2455.47) | 104.06 (2643.02) | 7.38 (187.55) 7.6% |
| Sidewall Height inches (mm) | 6.89 (174.9) | 8.06 (204.75) | 1.18 (29.85) 17.1% |
| Revolutions per mile (km) | 655.41 (407.25) | 608.9 (378.35) | -46.51 (-28.9) -7.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.53 mph (34.65 km/h) |
| 25 mph (40.23 km/h) | 26.91 mph (43.31 km/h) |
| 30 mph (48.28 km/h) | 32.29 mph (51.97 km/h) |
| 35 mph (56.33 km/h) | 37.67 mph (60.63 km/h) |
| 40 mph (64.37 km/h) | 43.06 mph (69.29 km/h) |
| 45 mph (72.42 km/h) | 48.44 mph (77.95 km/h) |
| 50 mph (80.47 km/h) | 53.82 mph (86.61 km/h) |
| 55 mph (88.51 km/h) | 59.2 mph (95.27 km/h) |
| 60 mph (96.56 km/h) | 64.58 mph (103.94 km/h) |
| 65 mph (104.61 km/h) | 69.96 mph (112.6 km/h) |
| 70 mph (112.65 km/h) | 75.35 mph (121.26 km/h) |
| 75 mph (120.7 km/h) | 80.73 mph (129.92 km/h) |
| 80 mph (128.75 km/h) | 86.11 mph (138.58 km/h) |
| 85 mph (136.79 km/h) | 91.49 mph (147.24 km/h) |
| 90 mph (144.84 km/h) | 96.87 mph (155.9 km/h) |
| 95 mph (152.89 km/h) | 102.26 mph (164.57 km/h) |
| 100 mph (160.93 km/h) | 107.64 mph (173.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1550 | 1800 | 1939 | 2024 | 2117 | 2183 | 2255 | 2341 | 2459 | 2578 | 2710 | 2816 | 3007 | 3218 | 3383 | 3488 | 3547 | 3765 | 4068 | 4728 |
Better Fuel Economy Factory Ratios Increased Power
