Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/85-18 | 295/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.7 (652.7) | 36.58 (929.2) | 10.89 (276.5) 42.4% |
| Width inches (mm) | 4.53 (115) | 11.61 (295) | 7.09 (180) 156.5% |
| Circum. inches (mm) | 80.73 (2050.52) | 114.93 (2919.17) | 34.2 (868.65) 42.4% |
| Sidewall Height inches (mm) | 3.85 (97.75) | 9.29 (236) | 5.44 (138.25) 141.4% |
| Revolutions per mile (km) | 784.85 (487.68) | 551.3 (342.56) | -233.55 (-145.12) -29.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.47 mph (45.82 km/h) |
| 25 mph (40.23 km/h) | 35.59 mph (57.28 km/h) |
| 30 mph (48.28 km/h) | 42.71 mph (68.73 km/h) |
| 35 mph (56.33 km/h) | 49.83 mph (80.19 km/h) |
| 40 mph (64.37 km/h) | 56.94 mph (91.64 km/h) |
| 45 mph (72.42 km/h) | 64.06 mph (103.1 km/h) |
| 50 mph (80.47 km/h) | 71.18 mph (114.56 km/h) |
| 55 mph (88.51 km/h) | 78.3 mph (126.01 km/h) |
| 60 mph (96.56 km/h) | 85.42 mph (137.47 km/h) |
| 65 mph (104.61 km/h) | 92.54 mph (148.92 km/h) |
| 70 mph (112.65 km/h) | 99.65 mph (160.38 km/h) |
| 75 mph (120.7 km/h) | 106.77 mph (171.83 km/h) |
| 80 mph (128.75 km/h) | 113.89 mph (183.29 km/h) |
| 85 mph (136.79 km/h) | 121.01 mph (194.74 km/h) |
| 90 mph (144.84 km/h) | 128.13 mph (206.2 km/h) |
| 95 mph (152.89 km/h) | 135.24 mph (217.66 km/h) |
| 100 mph (160.93 km/h) | 142.36 mph (229.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1403 | 1630 | 1755 | 1833 | 1916 | 1976 | 2042 | 2119 | 2227 | 2334 | 2454 | 2549 | 2722 | 2913 | 3063 | 3158 | 3212 | 3409 | 3684 | 4281 |
Better Fuel Economy Factory Ratios Increased Power
