Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-17 | 138/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.5 (647.8) | 25.69 (652.6) | 0.19 (4.8) 0.7% |
| Width inches (mm) | 5.31 (135) | 5.43 (138) | 0.12 (3) 2.2% |
| Circum. inches (mm) | 80.12 (2035.12) | 80.72 (2050.2) | 0.59 (15.08) 0.7% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.35 (110.4) | 0.09 (2.4) 2.2% |
| Revolutions per mile (km) | 790.78 (491.37) | 784.97 (487.76) | -5.82 (-3.61) -0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.15 mph (32.43 km/h) |
| 25 mph (40.23 km/h) | 25.19 mph (40.53 km/h) |
| 30 mph (48.28 km/h) | 30.22 mph (48.64 km/h) |
| 35 mph (56.33 km/h) | 35.26 mph (56.74 km/h) |
| 40 mph (64.37 km/h) | 40.3 mph (64.85 km/h) |
| 45 mph (72.42 km/h) | 45.33 mph (72.96 km/h) |
| 50 mph (80.47 km/h) | 50.37 mph (81.06 km/h) |
| 55 mph (88.51 km/h) | 55.41 mph (89.17 km/h) |
| 60 mph (96.56 km/h) | 60.44 mph (97.28 km/h) |
| 65 mph (104.61 km/h) | 65.48 mph (105.38 km/h) |
| 70 mph (112.65 km/h) | 70.52 mph (113.49 km/h) |
| 75 mph (120.7 km/h) | 75.56 mph (121.6 km/h) |
| 80 mph (128.75 km/h) | 80.59 mph (129.7 km/h) |
| 85 mph (136.79 km/h) | 85.63 mph (137.81 km/h) |
| 90 mph (144.84 km/h) | 90.67 mph (145.91 km/h) |
| 95 mph (152.89 km/h) | 95.7 mph (154.02 km/h) |
| 100 mph (160.93 km/h) | 100.74 mph (162.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1998 | 2321 | 2499 | 2610 | 2729 | 2814 | 2907 | 3018 | 3171 | 3324 | 3494 | 3630 | 3876 | 4148 | 4361 | 4497 | 4573 | 4854 | 5245 | 6095 |
Better Fuel Economy Factory Ratios Increased Power
