Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 275/65-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 30.07 (763.9) | -7.37 (-187.1) -19.7% |
| Width inches (mm) | 12.4 (315) | 10.83 (275) | -1.57 (-40) -12.7% |
| Circum. inches (mm) | 117.62 (2987.65) | 94.48 (2399.86) | -23.14 (-587.79) -19.7% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 7.04 (178.75) | 3.32 (84.25) 89.2% |
| Revolutions per mile (km) | 538.66 (334.71) | 670.6 (416.69) | 131.93 (81.98) 24.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.07 mph (25.85 km/h) |
| 25 mph (40.23 km/h) | 20.08 mph (32.32 km/h) |
| 30 mph (48.28 km/h) | 24.1 mph (38.78 km/h) |
| 35 mph (56.33 km/h) | 28.11 mph (45.25 km/h) |
| 40 mph (64.37 km/h) | 32.13 mph (51.71 km/h) |
| 45 mph (72.42 km/h) | 36.15 mph (58.17 km/h) |
| 50 mph (80.47 km/h) | 40.16 mph (64.64 km/h) |
| 55 mph (88.51 km/h) | 44.18 mph (71.1 km/h) |
| 60 mph (96.56 km/h) | 48.2 mph (77.56 km/h) |
| 65 mph (104.61 km/h) | 52.21 mph (84.03 km/h) |
| 70 mph (112.65 km/h) | 56.23 mph (90.49 km/h) |
| 75 mph (120.7 km/h) | 60.24 mph (96.95 km/h) |
| 80 mph (128.75 km/h) | 64.26 mph (103.42 km/h) |
| 85 mph (136.79 km/h) | 68.28 mph (109.88 km/h) |
| 90 mph (144.84 km/h) | 72.29 mph (116.35 km/h) |
| 95 mph (152.89 km/h) | 76.31 mph (122.81 km/h) |
| 100 mph (160.93 km/h) | 80.33 mph (129.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1707 | 1982 | 2135 | 2229 | 2331 | 2404 | 2484 | 2578 | 2709 | 2839 | 2985 | 3101 | 3311 | 3544 | 3725 | 3842 | 3907 | 4147 | 4481 | 5207 |
Better Fuel Economy Factory Ratios Increased Power
