Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-17 | 115/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.5 (647.8) | 22.24 (565) | -3.26 (-82.8) -12.8% |
| Width inches (mm) | 5.31 (135) | 4.53 (115) | -0.79 (-20) -14.8% |
| Circum. inches (mm) | 80.12 (2035.12) | 69.88 (1775) | -10.24 (-260.12) -12.8% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.62 (92) | -0.63 (-16) -14.8% |
| Revolutions per mile (km) | 790.78 (491.37) | 906.67 (563.38) | 115.89 (72.01) 14.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.44 mph (28.07 km/h) |
| 25 mph (40.23 km/h) | 21.8 mph (35.09 km/h) |
| 30 mph (48.28 km/h) | 26.17 mph (42.11 km/h) |
| 35 mph (56.33 km/h) | 30.53 mph (49.13 km/h) |
| 40 mph (64.37 km/h) | 34.89 mph (56.15 km/h) |
| 45 mph (72.42 km/h) | 39.25 mph (63.16 km/h) |
| 50 mph (80.47 km/h) | 43.61 mph (70.18 km/h) |
| 55 mph (88.51 km/h) | 47.97 mph (77.2 km/h) |
| 60 mph (96.56 km/h) | 52.33 mph (84.22 km/h) |
| 65 mph (104.61 km/h) | 56.69 mph (91.24 km/h) |
| 70 mph (112.65 km/h) | 61.05 mph (98.26 km/h) |
| 75 mph (120.7 km/h) | 65.41 mph (105.27 km/h) |
| 80 mph (128.75 km/h) | 69.77 mph (112.29 km/h) |
| 85 mph (136.79 km/h) | 74.14 mph (119.31 km/h) |
| 90 mph (144.84 km/h) | 78.5 mph (126.33 km/h) |
| 95 mph (152.89 km/h) | 82.86 mph (133.35 km/h) |
| 100 mph (160.93 km/h) | 87.22 mph (140.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2307 | 2680 | 2887 | 3014 | 3152 | 3250 | 3358 | 3486 | 3662 | 3839 | 4035 | 4192 | 4477 | 4791 | 5037 | 5194 | 5282 | 5606 | 6058 | 7040 |
Better Fuel Economy Factory Ratios Increased Power
