Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 135/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 22.44 (570) | 1.1 (28) 5.2% |
| Width inches (mm) | 4.53 (115) | 5.31 (135) | 0.79 (20) 17.4% |
| Circum. inches (mm) | 67.04 (1702.74) | 70.5 (1790.71) | 3.46 (87.96) 5.2% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.72 (94.5) | 0.55 (14) 17.4% |
| Revolutions per mile (km) | 945.15 (587.29) | 898.72 (558.44) | -46.43 (-28.85) -4.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.03 mph (33.85 km/h) |
| 25 mph (40.23 km/h) | 26.29 mph (42.31 km/h) |
| 30 mph (48.28 km/h) | 31.55 mph (50.77 km/h) |
| 35 mph (56.33 km/h) | 36.81 mph (59.24 km/h) |
| 40 mph (64.37 km/h) | 42.07 mph (67.7 km/h) |
| 45 mph (72.42 km/h) | 47.32 mph (76.16 km/h) |
| 50 mph (80.47 km/h) | 52.58 mph (84.62 km/h) |
| 55 mph (88.51 km/h) | 57.84 mph (93.09 km/h) |
| 60 mph (96.56 km/h) | 63.1 mph (101.55 km/h) |
| 65 mph (104.61 km/h) | 68.36 mph (110.01 km/h) |
| 70 mph (112.65 km/h) | 73.62 mph (118.47 km/h) |
| 75 mph (120.7 km/h) | 78.87 mph (126.94 km/h) |
| 80 mph (128.75 km/h) | 84.13 mph (135.4 km/h) |
| 85 mph (136.79 km/h) | 89.39 mph (143.86 km/h) |
| 90 mph (144.84 km/h) | 94.65 mph (152.32 km/h) |
| 95 mph (152.89 km/h) | 99.91 mph (160.79 km/h) |
| 100 mph (160.93 km/h) | 105.17 mph (169.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2287 | 2657 | 2861 | 2988 | 3124 | 3221 | 3328 | 3455 | 3630 | 3805 | 4000 | 4156 | 4438 | 4749 | 4993 | 5148 | 5236 | 5557 | 6005 | 6978 |
Better Fuel Economy Factory Ratios Increased Power
