Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/65-17 | 300/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.14 (587.8) | 32.35 (821.8) | 9.21 (234) 39.8% |
| Width inches (mm) | 4.72 (120) | 11.81 (300) | 7.09 (180) 150% |
| Circum. inches (mm) | 72.7 (1846.63) | 101.64 (2581.76) | 28.94 (735.13) 39.8% |
| Sidewall Height inches (mm) | 3.07 (78) | 7.68 (195) | 4.61 (117) 150% |
| Revolutions per mile (km) | 871.5 (541.53) | 623.35 (387.33) | -248.15 (-154.19) -28.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.96 mph (45 km/h) |
| 25 mph (40.23 km/h) | 34.95 mph (56.25 km/h) |
| 30 mph (48.28 km/h) | 41.94 mph (67.5 km/h) |
| 35 mph (56.33 km/h) | 48.93 mph (78.75 km/h) |
| 40 mph (64.37 km/h) | 55.92 mph (90 km/h) |
| 45 mph (72.42 km/h) | 62.91 mph (101.25 km/h) |
| 50 mph (80.47 km/h) | 69.9 mph (112.5 km/h) |
| 55 mph (88.51 km/h) | 76.9 mph (123.75 km/h) |
| 60 mph (96.56 km/h) | 83.89 mph (135 km/h) |
| 65 mph (104.61 km/h) | 90.88 mph (146.25 km/h) |
| 70 mph (112.65 km/h) | 97.87 mph (157.5 km/h) |
| 75 mph (120.7 km/h) | 104.86 mph (168.75 km/h) |
| 80 mph (128.75 km/h) | 111.85 mph (180 km/h) |
| 85 mph (136.79 km/h) | 118.84 mph (191.25 km/h) |
| 90 mph (144.84 km/h) | 125.83 mph (202.5 km/h) |
| 95 mph (152.89 km/h) | 132.82 mph (213.75 km/h) |
| 100 mph (160.93 km/h) | 139.81 mph (225 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1586 | 1843 | 1985 | 2072 | 2167 | 2234 | 2309 | 2396 | 2518 | 2639 | 2774 | 2882 | 3078 | 3294 | 3463 | 3571 | 3632 | 3854 | 4165 | 4840 |
Better Fuel Economy Factory Ratios Increased Power
