Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/35-18 | 285/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.13 (663.7) | 26.98 (685.2) | 0.85 (21.5) 3.2% |
| Width inches (mm) | 11.61 (295) | 11.22 (285) | -0.39 (-10) -3.4% |
| Circum. inches (mm) | 82.09 (2085.08) | 84.75 (2152.62) | 2.66 (67.54) 3.2% |
| Sidewall Height inches (mm) | 4.06 (103.25) | 4.49 (114) | 0.42 (10.75) 10.4% |
| Revolutions per mile (km) | 771.84 (479.6) | 747.62 (464.55) | -24.22 (-15.05) -3.1% |
285/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.65 mph (33.23 km/h) |
| 25 mph (40.23 km/h) | 25.81 mph (41.54 km/h) |
| 30 mph (48.28 km/h) | 30.97 mph (49.84 km/h) |
| 35 mph (56.33 km/h) | 36.13 mph (58.15 km/h) |
| 40 mph (64.37 km/h) | 41.3 mph (66.46 km/h) |
| 45 mph (72.42 km/h) | 46.46 mph (74.77 km/h) |
| 50 mph (80.47 km/h) | 51.62 mph (83.07 km/h) |
| 55 mph (88.51 km/h) | 56.78 mph (91.38 km/h) |
| 60 mph (96.56 km/h) | 61.94 mph (99.69 km/h) |
| 65 mph (104.61 km/h) | 67.11 mph (108 km/h) |
| 70 mph (112.65 km/h) | 72.27 mph (116.3 km/h) |
| 75 mph (120.7 km/h) | 77.43 mph (124.61 km/h) |
| 80 mph (128.75 km/h) | 82.59 mph (132.92 km/h) |
| 85 mph (136.79 km/h) | 87.75 mph (141.23 km/h) |
| 90 mph (144.84 km/h) | 92.92 mph (149.53 km/h) |
| 95 mph (152.89 km/h) | 98.08 mph (157.84 km/h) |
| 100 mph (160.93 km/h) | 103.24 mph (166.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1903 | 2210 | 2380 | 2485 | 2599 | 2680 | 2769 | 2874 | 3020 | 3166 | 3327 | 3457 | 3692 | 3951 | 4153 | 4283 | 4356 | 4623 | 4995 | 5805 |
Better Fuel Economy Factory Ratios Increased Power
