Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/66-17 | 320/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.77 (781.6) | 33.64 (854.4) | 2.87 (72.8) 9.3% |
| Width inches (mm) | 10.43 (265) | 12.6 (320) | 2.17 (55) 20.8% |
| Circum. inches (mm) | 96.67 (2455.47) | 105.68 (2684.18) | 9 (228.71) 9.3% |
| Sidewall Height inches (mm) | 6.89 (174.9) | 8.82 (224) | 1.93 (49.1) 28.1% |
| Revolutions per mile (km) | 655.41 (407.25) | 599.57 (372.55) | -55.85 (-34.7) -8.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.86 mph (35.18 km/h) |
| 25 mph (40.23 km/h) | 27.33 mph (43.98 km/h) |
| 30 mph (48.28 km/h) | 32.79 mph (52.78 km/h) |
| 35 mph (56.33 km/h) | 38.26 mph (61.57 km/h) |
| 40 mph (64.37 km/h) | 43.73 mph (70.37 km/h) |
| 45 mph (72.42 km/h) | 49.19 mph (79.17 km/h) |
| 50 mph (80.47 km/h) | 54.66 mph (87.96 km/h) |
| 55 mph (88.51 km/h) | 60.12 mph (96.76 km/h) |
| 60 mph (96.56 km/h) | 65.59 mph (105.55 km/h) |
| 65 mph (104.61 km/h) | 71.05 mph (114.35 km/h) |
| 70 mph (112.65 km/h) | 76.52 mph (123.15 km/h) |
| 75 mph (120.7 km/h) | 81.99 mph (131.94 km/h) |
| 80 mph (128.75 km/h) | 87.45 mph (140.74 km/h) |
| 85 mph (136.79 km/h) | 92.92 mph (149.54 km/h) |
| 90 mph (144.84 km/h) | 98.38 mph (158.33 km/h) |
| 95 mph (152.89 km/h) | 103.85 mph (167.13 km/h) |
| 100 mph (160.93 km/h) | 109.31 mph (175.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1526 | 1773 | 1909 | 1993 | 2084 | 2149 | 2221 | 2305 | 2422 | 2539 | 2668 | 2772 | 2961 | 3168 | 3331 | 3435 | 3493 | 3707 | 4006 | 4655 |
Better Fuel Economy Factory Ratios Increased Power
