Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/65-15 | 275/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.56 (725.5) | 32.07 (814.7) | 3.51 (89.2) 12.3% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 89.73 (2279.23) | 100.77 (2559.46) | 11.03 (280.23) 12.3% |
| Sidewall Height inches (mm) | 6.78 (172.25) | 7.04 (178.75) | 0.26 (6.5) 3.8% |
| Revolutions per mile (km) | 706.09 (438.74) | 628.78 (390.71) | -77.31 (-48.04) -10.9% |
275/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.46 mph (36.14 km/h) |
| 25 mph (40.23 km/h) | 28.07 mph (45.18 km/h) |
| 30 mph (48.28 km/h) | 33.69 mph (54.22 km/h) |
| 35 mph (56.33 km/h) | 39.3 mph (63.25 km/h) |
| 40 mph (64.37 km/h) | 44.92 mph (72.29 km/h) |
| 45 mph (72.42 km/h) | 50.53 mph (81.32 km/h) |
| 50 mph (80.47 km/h) | 56.15 mph (90.36 km/h) |
| 55 mph (88.51 km/h) | 61.76 mph (99.4 km/h) |
| 60 mph (96.56 km/h) | 67.38 mph (108.43 km/h) |
| 65 mph (104.61 km/h) | 72.99 mph (117.47 km/h) |
| 70 mph (112.65 km/h) | 78.61 mph (126.51 km/h) |
| 75 mph (120.7 km/h) | 84.22 mph (135.54 km/h) |
| 80 mph (128.75 km/h) | 89.84 mph (144.58 km/h) |
| 85 mph (136.79 km/h) | 95.45 mph (153.61 km/h) |
| 90 mph (144.84 km/h) | 101.07 mph (162.65 km/h) |
| 95 mph (152.89 km/h) | 106.68 mph (171.69 km/h) |
| 100 mph (160.93 km/h) | 112.29 mph (180.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1600 | 1859 | 2002 | 2090 | 2186 | 2254 | 2329 | 2417 | 2540 | 2662 | 2799 | 2907 | 3105 | 3323 | 3493 | 3602 | 3663 | 3888 | 4201 | 4882 |
Better Fuel Economy Factory Ratios Increased Power
