Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/30-18 | 305/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.97 (634.2) | 25.2 (640.2) | 0.24 (6) 0.9% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 78.44 (1992.4) | 79.18 (2011.25) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 3.48 (88.5) | 3.6 (91.5) | 0.12 (3) 3.4% |
| Revolutions per mile (km) | 807.74 (501.91) | 800.17 (497.2) | -7.57 (-4.7) -0.9% |
305/30-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.61 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.74 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.86 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.98 km/h) |
| 45 mph (72.42 km/h) | 45.43 mph (73.11 km/h) |
| 50 mph (80.47 km/h) | 50.47 mph (81.23 km/h) |
| 55 mph (88.51 km/h) | 55.52 mph (89.35 km/h) |
| 60 mph (96.56 km/h) | 60.57 mph (97.47 km/h) |
| 65 mph (104.61 km/h) | 65.61 mph (105.6 km/h) |
| 70 mph (112.65 km/h) | 70.66 mph (113.72 km/h) |
| 75 mph (120.7 km/h) | 75.71 mph (121.84 km/h) |
| 80 mph (128.75 km/h) | 80.76 mph (129.97 km/h) |
| 85 mph (136.79 km/h) | 85.8 mph (138.09 km/h) |
| 90 mph (144.84 km/h) | 90.85 mph (146.21 km/h) |
| 95 mph (152.89 km/h) | 95.9 mph (154.33 km/h) |
| 100 mph (160.93 km/h) | 100.95 mph (162.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2036 | 2366 | 2548 | 2660 | 2781 | 2868 | 2963 | 3076 | 3232 | 3388 | 3561 | 3700 | 3951 | 4229 | 4445 | 4584 | 4662 | 4948 | 5346 | 6213 |
Better Fuel Economy Factory Ratios Increased Power
