Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-18 | 205/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.55 (598.2) | 23.65 (600.7) | 0.1 (2.5) 0.4% |
| Width inches (mm) | 9.25 (235) | 8.07 (205) | -1.18 (-30) -12.8% |
| Circum. inches (mm) | 73.99 (1879.3) | 74.3 (1887.15) | 0.31 (7.85) 0.4% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 2.82 (71.75) | 0.05 (1.25) 1.8% |
| Revolutions per mile (km) | 856.35 (532.11) | 852.79 (529.9) | -3.56 (-2.21) -0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.08 mph (32.32 km/h) |
| 25 mph (40.23 km/h) | 25.1 mph (40.4 km/h) |
| 30 mph (48.28 km/h) | 30.13 mph (48.48 km/h) |
| 35 mph (56.33 km/h) | 35.15 mph (56.56 km/h) |
| 40 mph (64.37 km/h) | 40.17 mph (64.64 km/h) |
| 45 mph (72.42 km/h) | 45.19 mph (72.72 km/h) |
| 50 mph (80.47 km/h) | 50.21 mph (80.8 km/h) |
| 55 mph (88.51 km/h) | 55.23 mph (88.88 km/h) |
| 60 mph (96.56 km/h) | 60.25 mph (96.96 km/h) |
| 65 mph (104.61 km/h) | 65.27 mph (105.04 km/h) |
| 70 mph (112.65 km/h) | 70.29 mph (113.13 km/h) |
| 75 mph (120.7 km/h) | 75.31 mph (121.21 km/h) |
| 80 mph (128.75 km/h) | 80.33 mph (129.29 km/h) |
| 85 mph (136.79 km/h) | 85.36 mph (137.37 km/h) |
| 90 mph (144.84 km/h) | 90.38 mph (145.45 km/h) |
| 95 mph (152.89 km/h) | 95.4 mph (153.53 km/h) |
| 100 mph (160.93 km/h) | 100.42 mph (161.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2170 | 2521 | 2715 | 2835 | 2964 | 3057 | 3158 | 3278 | 3445 | 3611 | 3796 | 3943 | 4211 | 4507 | 4737 | 4885 | 4968 | 5273 | 5698 | 6621 |
Better Fuel Economy Factory Ratios Increased Power
