Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 260/65-18 | 31/10.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.31 (795.2) | 31.03 (788.28) | -0.27 (-6.92) -0.9% |
| Width inches (mm) | 10.24 (260) | 10.51 (267) | 0.28 (7) 2.7% |
| Circum. inches (mm) | 98.35 (2498.19) | 97.5 (2476.45) | -0.86 (-21.74) -0.9% |
| Sidewall Height inches (mm) | 6.65 (169) | 6.52 (165.54) | -0.14 (-3.46) -2% |
| Revolutions per mile (km) | 644.2 (400.29) | 649.86 (403.8) | 5.66 (3.51) 0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.83 mph (31.91 km/h) |
| 25 mph (40.23 km/h) | 24.78 mph (39.88 km/h) |
| 30 mph (48.28 km/h) | 29.74 mph (47.86 km/h) |
| 35 mph (56.33 km/h) | 34.7 mph (55.84 km/h) |
| 40 mph (64.37 km/h) | 39.65 mph (63.81 km/h) |
| 45 mph (72.42 km/h) | 44.61 mph (71.79 km/h) |
| 50 mph (80.47 km/h) | 49.56 mph (79.77 km/h) |
| 55 mph (88.51 km/h) | 54.52 mph (87.74 km/h) |
| 60 mph (96.56 km/h) | 59.48 mph (95.72 km/h) |
| 65 mph (104.61 km/h) | 64.43 mph (103.7 km/h) |
| 70 mph (112.65 km/h) | 69.39 mph (111.67 km/h) |
| 75 mph (120.7 km/h) | 74.35 mph (119.65 km/h) |
| 80 mph (128.75 km/h) | 79.3 mph (127.63 km/h) |
| 85 mph (136.79 km/h) | 84.26 mph (135.6 km/h) |
| 90 mph (144.84 km/h) | 89.22 mph (143.58 km/h) |
| 95 mph (152.89 km/h) | 94.17 mph (151.56 km/h) |
| 100 mph (160.93 km/h) | 99.13 mph (159.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1654 | 1921 | 2069 | 2160 | 2259 | 2329 | 2407 | 2498 | 2625 | 2752 | 2892 | 3005 | 3209 | 3434 | 3610 | 3723 | 3786 | 4018 | 4342 | 5046 |
Better Fuel Economy Factory Ratios Increased Power
