Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/35-18 | 275/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.58 (649.7) | 26.66 (677.2) | 1.08 (27.5) 4.2% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 80.36 (2041.09) | 83.76 (2127.49) | 3.4 (86.39) 4.2% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 4.33 (110) | 0.54 (13.75) 14.3% |
| Revolutions per mile (km) | 788.47 (489.93) | 756.45 (470.04) | -32.02 (-19.9) -4.1% |
275/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.85 mph (33.55 km/h) |
| 25 mph (40.23 km/h) | 26.06 mph (41.94 km/h) |
| 30 mph (48.28 km/h) | 31.27 mph (50.32 km/h) |
| 35 mph (56.33 km/h) | 36.48 mph (58.71 km/h) |
| 40 mph (64.37 km/h) | 41.69 mph (67.1 km/h) |
| 45 mph (72.42 km/h) | 46.9 mph (75.49 km/h) |
| 50 mph (80.47 km/h) | 52.12 mph (83.87 km/h) |
| 55 mph (88.51 km/h) | 57.33 mph (92.26 km/h) |
| 60 mph (96.56 km/h) | 62.54 mph (100.65 km/h) |
| 65 mph (104.61 km/h) | 67.75 mph (109.04 km/h) |
| 70 mph (112.65 km/h) | 72.96 mph (117.42 km/h) |
| 75 mph (120.7 km/h) | 78.17 mph (125.81 km/h) |
| 80 mph (128.75 km/h) | 83.39 mph (134.2 km/h) |
| 85 mph (136.79 km/h) | 88.6 mph (142.58 km/h) |
| 90 mph (144.84 km/h) | 93.81 mph (150.97 km/h) |
| 95 mph (152.89 km/h) | 99.02 mph (159.36 km/h) |
| 100 mph (160.93 km/h) | 104.23 mph (167.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1925 | 2236 | 2408 | 2515 | 2630 | 2711 | 2802 | 2908 | 3055 | 3203 | 3367 | 3498 | 3735 | 3998 | 4202 | 4333 | 4407 | 4677 | 5054 | 5873 |
Better Fuel Economy Factory Ratios Increased Power
