Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/90-15 | 235/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.92 (633) | 30.73 (780.5) | 5.81 (147.5) 23.3% |
| Width inches (mm) | 5.51 (140) | 9.25 (235) | 3.74 (95) 67.9% |
| Circum. inches (mm) | 78.29 (1988.63) | 96.54 (2452.01) | 18.24 (463.38) 23.3% |
| Sidewall Height inches (mm) | 4.96 (126) | 7.86 (199.75) | 2.9 (73.75) 58.5% |
| Revolutions per mile (km) | 809.27 (502.86) | 656.34 (407.83) | -152.94 (-95.03) -18.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.66 mph (39.69 km/h) |
| 25 mph (40.23 km/h) | 30.83 mph (49.61 km/h) |
| 30 mph (48.28 km/h) | 36.99 mph (59.53 km/h) |
| 35 mph (56.33 km/h) | 43.16 mph (69.45 km/h) |
| 40 mph (64.37 km/h) | 49.32 mph (79.37 km/h) |
| 45 mph (72.42 km/h) | 55.49 mph (89.3 km/h) |
| 50 mph (80.47 km/h) | 61.65 mph (99.22 km/h) |
| 55 mph (88.51 km/h) | 67.82 mph (109.14 km/h) |
| 60 mph (96.56 km/h) | 73.98 mph (119.06 km/h) |
| 65 mph (104.61 km/h) | 80.15 mph (128.98 km/h) |
| 70 mph (112.65 km/h) | 86.31 mph (138.9 km/h) |
| 75 mph (120.7 km/h) | 92.48 mph (148.83 km/h) |
| 80 mph (128.75 km/h) | 98.64 mph (158.75 km/h) |
| 85 mph (136.79 km/h) | 104.81 mph (168.67 km/h) |
| 90 mph (144.84 km/h) | 110.97 mph (178.59 km/h) |
| 95 mph (152.89 km/h) | 117.14 mph (188.51 km/h) |
| 100 mph (160.93 km/h) | 123.3 mph (198.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1670 | 1940 | 2090 | 2182 | 2281 | 2353 | 2431 | 2523 | 2651 | 2779 | 2921 | 3035 | 3241 | 3468 | 3646 | 3760 | 3824 | 4058 | 4385 | 5096 |
Better Fuel Economy Factory Ratios Increased Power
