Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-15 | 145/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.5 (597) | 22.99 (584) | -0.51 (-13) -2.2% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 73.84 (1875.53) | 72.23 (1834.69) | -1.61 (-40.84) -2.2% |
| Sidewall Height inches (mm) | 4.25 (108) | 4 (101.5) | -0.26 (-6.5) -6% |
| Revolutions per mile (km) | 858.07 (533.18) | 877.17 (545.05) | 19.1 (11.87) 2.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.56 mph (31.49 km/h) |
| 25 mph (40.23 km/h) | 24.46 mph (39.36 km/h) |
| 30 mph (48.28 km/h) | 29.35 mph (47.23 km/h) |
| 35 mph (56.33 km/h) | 34.24 mph (55.1 km/h) |
| 40 mph (64.37 km/h) | 39.13 mph (62.97 km/h) |
| 45 mph (72.42 km/h) | 44.02 mph (70.84 km/h) |
| 50 mph (80.47 km/h) | 48.91 mph (78.72 km/h) |
| 55 mph (88.51 km/h) | 53.8 mph (86.59 km/h) |
| 60 mph (96.56 km/h) | 58.69 mph (94.46 km/h) |
| 65 mph (104.61 km/h) | 63.58 mph (102.33 km/h) |
| 70 mph (112.65 km/h) | 68.48 mph (110.2 km/h) |
| 75 mph (120.7 km/h) | 73.37 mph (118.07 km/h) |
| 80 mph (128.75 km/h) | 78.26 mph (125.94 km/h) |
| 85 mph (136.79 km/h) | 83.15 mph (133.82 km/h) |
| 90 mph (144.84 km/h) | 88.04 mph (141.69 km/h) |
| 95 mph (152.89 km/h) | 92.93 mph (149.56 km/h) |
| 100 mph (160.93 km/h) | 97.82 mph (157.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2232 | 2593 | 2793 | 2916 | 3049 | 3144 | 3249 | 3372 | 3543 | 3714 | 3904 | 4056 | 4332 | 4635 | 4873 | 5025 | 5110 | 5424 | 5861 | 6811 |
Better Fuel Economy Factory Ratios Increased Power
