Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 315/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 37.08 (941.9) | 11.64 (295.7) 45.8% |
| Width inches (mm) | 5.31 (135) | 12.4 (315) | 7.09 (180) 133.3% |
| Circum. inches (mm) | 79.93 (2030.1) | 116.5 (2959.07) | 36.57 (928.97) 45.8% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 10.54 (267.75) | 6.82 (173.25) 183.3% |
| Revolutions per mile (km) | 792.74 (492.59) | 543.87 (337.94) | -248.87 (-154.64) -31.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 29.15 mph (46.92 km/h) |
| 25 mph (40.23 km/h) | 36.44 mph (58.64 km/h) |
| 30 mph (48.28 km/h) | 43.73 mph (70.37 km/h) |
| 35 mph (56.33 km/h) | 51.02 mph (82.1 km/h) |
| 40 mph (64.37 km/h) | 58.3 mph (93.83 km/h) |
| 45 mph (72.42 km/h) | 65.59 mph (105.56 km/h) |
| 50 mph (80.47 km/h) | 72.88 mph (117.29 km/h) |
| 55 mph (88.51 km/h) | 80.17 mph (129.02 km/h) |
| 60 mph (96.56 km/h) | 87.46 mph (140.75 km/h) |
| 65 mph (104.61 km/h) | 94.74 mph (152.48 km/h) |
| 70 mph (112.65 km/h) | 102.03 mph (164.2 km/h) |
| 75 mph (120.7 km/h) | 109.32 mph (175.93 km/h) |
| 80 mph (128.75 km/h) | 116.61 mph (187.66 km/h) |
| 85 mph (136.79 km/h) | 123.9 mph (199.39 km/h) |
| 90 mph (144.84 km/h) | 131.18 mph (211.12 km/h) |
| 95 mph (152.89 km/h) | 138.47 mph (222.85 km/h) |
| 100 mph (160.93 km/h) | 145.76 mph (234.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1384 | 1608 | 1732 | 1808 | 1891 | 1949 | 2014 | 2091 | 2197 | 2303 | 2421 | 2515 | 2686 | 2874 | 3021 | 3116 | 3169 | 3363 | 3634 | 4223 |
Better Fuel Economy Factory Ratios Increased Power
