Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 275/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 33.24 (844.3) | -4.2 (-106.7) -11.2% |
| Width inches (mm) | 12.4 (315) | 10.83 (275) | -1.57 (-40) -12.7% |
| Circum. inches (mm) | 117.62 (2987.65) | 104.43 (2652.45) | -13.2 (-335.21) -11.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 8.12 (206.25) | 4.4 (111.75) 118.3% |
| Revolutions per mile (km) | 538.66 (334.71) | 606.74 (377.01) | 68.07 (42.3) 12.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.76 mph (28.58 km/h) |
| 25 mph (40.23 km/h) | 22.2 mph (35.72 km/h) |
| 30 mph (48.28 km/h) | 26.63 mph (42.86 km/h) |
| 35 mph (56.33 km/h) | 31.07 mph (50.01 km/h) |
| 40 mph (64.37 km/h) | 35.51 mph (57.15 km/h) |
| 45 mph (72.42 km/h) | 39.95 mph (64.3 km/h) |
| 50 mph (80.47 km/h) | 44.39 mph (71.44 km/h) |
| 55 mph (88.51 km/h) | 48.83 mph (78.58 km/h) |
| 60 mph (96.56 km/h) | 53.27 mph (85.73 km/h) |
| 65 mph (104.61 km/h) | 57.71 mph (92.87 km/h) |
| 70 mph (112.65 km/h) | 62.15 mph (100.01 km/h) |
| 75 mph (120.7 km/h) | 66.59 mph (107.16 km/h) |
| 80 mph (128.75 km/h) | 71.02 mph (114.3 km/h) |
| 85 mph (136.79 km/h) | 75.46 mph (121.45 km/h) |
| 90 mph (144.84 km/h) | 79.9 mph (128.59 km/h) |
| 95 mph (152.89 km/h) | 84.34 mph (135.73 km/h) |
| 100 mph (160.93 km/h) | 88.78 mph (142.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1544 | 1794 | 1932 | 2017 | 2109 | 2175 | 2247 | 2332 | 2451 | 2569 | 2700 | 2806 | 2996 | 3206 | 3371 | 3476 | 3535 | 3752 | 4054 | 4711 |
Better Fuel Economy Factory Ratios Increased Power
