Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/90-15 | 245/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.92 (633) | 31.4 (797.5) | 6.48 (164.5) 26% |
| Width inches (mm) | 5.51 (140) | 9.65 (245) | 4.13 (105) 75% |
| Circum. inches (mm) | 78.29 (1988.63) | 98.64 (2505.42) | 20.35 (516.79) 26% |
| Sidewall Height inches (mm) | 4.96 (126) | 8.2 (208.25) | 3.24 (82.25) 65.3% |
| Revolutions per mile (km) | 809.27 (502.86) | 642.34 (399.13) | -166.93 (-103.72) -20.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.2 mph (40.55 km/h) |
| 25 mph (40.23 km/h) | 31.5 mph (50.69 km/h) |
| 30 mph (48.28 km/h) | 37.8 mph (60.83 km/h) |
| 35 mph (56.33 km/h) | 44.1 mph (70.97 km/h) |
| 40 mph (64.37 km/h) | 50.39 mph (81.1 km/h) |
| 45 mph (72.42 km/h) | 56.69 mph (91.24 km/h) |
| 50 mph (80.47 km/h) | 62.99 mph (101.38 km/h) |
| 55 mph (88.51 km/h) | 69.29 mph (111.52 km/h) |
| 60 mph (96.56 km/h) | 75.59 mph (121.65 km/h) |
| 65 mph (104.61 km/h) | 81.89 mph (131.79 km/h) |
| 70 mph (112.65 km/h) | 88.19 mph (141.93 km/h) |
| 75 mph (120.7 km/h) | 94.49 mph (152.07 km/h) |
| 80 mph (128.75 km/h) | 100.79 mph (162.21 km/h) |
| 85 mph (136.79 km/h) | 107.09 mph (172.34 km/h) |
| 90 mph (144.84 km/h) | 113.39 mph (182.48 km/h) |
| 95 mph (152.89 km/h) | 119.69 mph (192.62 km/h) |
| 100 mph (160.93 km/h) | 125.99 mph (202.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1635 | 1899 | 2045 | 2135 | 2233 | 2302 | 2379 | 2469 | 2595 | 2720 | 2859 | 2970 | 3172 | 3394 | 3568 | 3680 | 3742 | 3972 | 4292 | 4987 |
Better Fuel Economy Factory Ratios Increased Power
