Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/85-19 | 318/74-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.69 (652.6) | 33.53 (851.64) | 7.84 (199.04) 30.5% |
| Width inches (mm) | 3.94 (100) | 12.52 (318) | 8.58 (218) 218% |
| Circum. inches (mm) | 80.72 (2050.2) | 105.33 (2675.51) | 24.62 (625.3) 30.5% |
| Sidewall Height inches (mm) | 3.35 (85) | 9.26 (235.32) | 5.92 (150.32) 176.8% |
| Revolutions per mile (km) | 784.97 (487.76) | 601.51 (373.76) | -183.46 (-114) -23.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.1 mph (42 km/h) |
| 25 mph (40.23 km/h) | 32.62 mph (52.5 km/h) |
| 30 mph (48.28 km/h) | 39.15 mph (63.01 km/h) |
| 35 mph (56.33 km/h) | 45.67 mph (73.51 km/h) |
| 40 mph (64.37 km/h) | 52.2 mph (84.01 km/h) |
| 45 mph (72.42 km/h) | 58.72 mph (94.51 km/h) |
| 50 mph (80.47 km/h) | 65.25 mph (105.01 km/h) |
| 55 mph (88.51 km/h) | 71.77 mph (115.51 km/h) |
| 60 mph (96.56 km/h) | 78.3 mph (126.01 km/h) |
| 65 mph (104.61 km/h) | 84.82 mph (136.51 km/h) |
| 70 mph (112.65 km/h) | 91.35 mph (147.01 km/h) |
| 75 mph (120.7 km/h) | 97.87 mph (157.51 km/h) |
| 80 mph (128.75 km/h) | 104.4 mph (168.02 km/h) |
| 85 mph (136.79 km/h) | 110.92 mph (178.52 km/h) |
| 90 mph (144.84 km/h) | 117.45 mph (189.02 km/h) |
| 95 mph (152.89 km/h) | 123.97 mph (199.52 km/h) |
| 100 mph (160.93 km/h) | 130.5 mph (210.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1531 | 1778 | 1915 | 2000 | 2091 | 2156 | 2228 | 2312 | 2430 | 2547 | 2677 | 2781 | 2970 | 3179 | 3342 | 3446 | 3504 | 3719 | 4019 | 4670 |
Better Fuel Economy Factory Ratios Increased Power
