Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/35-18 | 305/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.85 (656.7) | 26.41 (670.7) | 0.55 (14) 2.1% |
| Width inches (mm) | 11.22 (285) | 12.01 (305) | 0.79 (20) 7% |
| Circum. inches (mm) | 81.22 (2063.08) | 82.96 (2107.07) | 1.73 (43.98) 2.1% |
| Sidewall Height inches (mm) | 3.93 (99.75) | 4.2 (106.75) | 0.28 (7) 7% |
| Revolutions per mile (km) | 780.07 (484.71) | 763.78 (474.59) | -16.28 (-10.12) -2.1% |
305/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.43 mph (32.87 km/h) |
| 25 mph (40.23 km/h) | 25.53 mph (41.09 km/h) |
| 30 mph (48.28 km/h) | 30.64 mph (49.31 km/h) |
| 35 mph (56.33 km/h) | 35.75 mph (57.53 km/h) |
| 40 mph (64.37 km/h) | 40.85 mph (65.75 km/h) |
| 45 mph (72.42 km/h) | 45.96 mph (73.96 km/h) |
| 50 mph (80.47 km/h) | 51.07 mph (82.18 km/h) |
| 55 mph (88.51 km/h) | 56.17 mph (90.4 km/h) |
| 60 mph (96.56 km/h) | 61.28 mph (98.62 km/h) |
| 65 mph (104.61 km/h) | 66.39 mph (106.84 km/h) |
| 70 mph (112.65 km/h) | 71.49 mph (115.06 km/h) |
| 75 mph (120.7 km/h) | 76.6 mph (123.27 km/h) |
| 80 mph (128.75 km/h) | 81.71 mph (131.49 km/h) |
| 85 mph (136.79 km/h) | 86.81 mph (139.71 km/h) |
| 90 mph (144.84 km/h) | 91.92 mph (147.93 km/h) |
| 95 mph (152.89 km/h) | 97.03 mph (156.15 km/h) |
| 100 mph (160.93 km/h) | 102.13 mph (164.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1944 | 2258 | 2432 | 2539 | 2655 | 2738 | 2829 | 2936 | 3085 | 3234 | 3399 | 3532 | 3772 | 4036 | 4243 | 4375 | 4450 | 4723 | 5103 | 5930 |
Better Fuel Economy Factory Ratios Increased Power
