Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-15 | 155/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.54 (598) | 19.88 (505) | -3.66 (-93) -15.6% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 73.96 (1878.67) | 62.46 (1586.5) | -11.5 (-292.17) -15.6% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 2.44 (62) | -1.83 (-46.5) -42.9% |
| Revolutions per mile (km) | 856.64 (532.29) | 1014.4 (630.32) | 157.76 (98.03) 18.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.89 mph (27.18 km/h) |
| 25 mph (40.23 km/h) | 21.11 mph (33.98 km/h) |
| 30 mph (48.28 km/h) | 25.33 mph (40.77 km/h) |
| 35 mph (56.33 km/h) | 29.56 mph (47.57 km/h) |
| 40 mph (64.37 km/h) | 33.78 mph (54.36 km/h) |
| 45 mph (72.42 km/h) | 38 mph (61.16 km/h) |
| 50 mph (80.47 km/h) | 42.22 mph (67.95 km/h) |
| 55 mph (88.51 km/h) | 46.45 mph (74.75 km/h) |
| 60 mph (96.56 km/h) | 50.67 mph (81.54 km/h) |
| 65 mph (104.61 km/h) | 54.89 mph (88.34 km/h) |
| 70 mph (112.65 km/h) | 59.11 mph (95.13 km/h) |
| 75 mph (120.7 km/h) | 63.34 mph (101.93 km/h) |
| 80 mph (128.75 km/h) | 67.56 mph (108.73 km/h) |
| 85 mph (136.79 km/h) | 71.78 mph (115.52 km/h) |
| 90 mph (144.84 km/h) | 76 mph (122.32 km/h) |
| 95 mph (152.89 km/h) | 80.23 mph (129.11 km/h) |
| 100 mph (160.93 km/h) | 84.45 mph (135.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
