Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 260/65-18 | 32/13.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.31 (795.2) | 31.88 (809.84) | 0.58 (14.64) 1.8% |
| Width inches (mm) | 10.24 (260) | 13.5 (343) | 3.27 (83) 31.9% |
| Circum. inches (mm) | 98.35 (2498.19) | 100.16 (2544.19) | 1.81 (45.99) 1.8% |
| Sidewall Height inches (mm) | 6.65 (169) | 5.94 (150.92) | -0.71 (-18.08) -10.7% |
| Revolutions per mile (km) | 644.2 (400.29) | 632.56 (393.05) | -11.65 (-7.24) -1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.37 mph (32.78 km/h) |
| 25 mph (40.23 km/h) | 25.46 mph (40.97 km/h) |
| 30 mph (48.28 km/h) | 30.55 mph (49.17 km/h) |
| 35 mph (56.33 km/h) | 35.64 mph (57.36 km/h) |
| 40 mph (64.37 km/h) | 40.74 mph (65.56 km/h) |
| 45 mph (72.42 km/h) | 45.83 mph (73.75 km/h) |
| 50 mph (80.47 km/h) | 50.92 mph (81.95 km/h) |
| 55 mph (88.51 km/h) | 56.01 mph (90.14 km/h) |
| 60 mph (96.56 km/h) | 61.1 mph (98.34 km/h) |
| 65 mph (104.61 km/h) | 66.2 mph (106.53 km/h) |
| 70 mph (112.65 km/h) | 71.29 mph (114.73 km/h) |
| 75 mph (120.7 km/h) | 76.38 mph (122.92 km/h) |
| 80 mph (128.75 km/h) | 81.47 mph (131.12 km/h) |
| 85 mph (136.79 km/h) | 86.56 mph (139.31 km/h) |
| 90 mph (144.84 km/h) | 91.66 mph (147.51 km/h) |
| 95 mph (152.89 km/h) | 96.75 mph (155.7 km/h) |
| 100 mph (160.93 km/h) | 101.84 mph (163.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1610 | 1870 | 2014 | 2103 | 2199 | 2267 | 2343 | 2432 | 2555 | 2678 | 2815 | 2925 | 3124 | 3343 | 3514 | 3624 | 3685 | 3911 | 4226 | 4911 |
Better Fuel Economy Factory Ratios Increased Power
