Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/70-14 | 27/8.5-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.2 (614.6) | 26.93 (683.92) | 2.73 (69.32) 11.3% |
| Width inches (mm) | 7.28 (185) | 8.5 (216) | 1.22 (31) 16.8% |
| Circum. inches (mm) | 76.02 (1930.82) | 84.59 (2148.6) | 8.57 (217.78) 11.3% |
| Sidewall Height inches (mm) | 5.1 (129.5) | 6.46 (164.16) | 1.36 (34.66) 26.8% |
| Revolutions per mile (km) | 833.5 (517.91) | 749.02 (465.42) | -84.48 (-52.49) -10.1% |
27/8.5-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.26 mph (35.82 km/h) |
| 25 mph (40.23 km/h) | 27.82 mph (44.77 km/h) |
| 30 mph (48.28 km/h) | 33.38 mph (53.73 km/h) |
| 35 mph (56.33 km/h) | 38.95 mph (62.68 km/h) |
| 40 mph (64.37 km/h) | 44.51 mph (71.63 km/h) |
| 45 mph (72.42 km/h) | 50.08 mph (80.59 km/h) |
| 50 mph (80.47 km/h) | 55.64 mph (89.54 km/h) |
| 55 mph (88.51 km/h) | 61.2 mph (98.5 km/h) |
| 60 mph (96.56 km/h) | 66.77 mph (107.45 km/h) |
| 65 mph (104.61 km/h) | 72.33 mph (116.41 km/h) |
| 70 mph (112.65 km/h) | 77.9 mph (125.36 km/h) |
| 75 mph (120.7 km/h) | 83.46 mph (134.31 km/h) |
| 80 mph (128.75 km/h) | 89.02 mph (143.27 km/h) |
| 85 mph (136.79 km/h) | 94.59 mph (152.22 km/h) |
| 90 mph (144.84 km/h) | 100.15 mph (161.18 km/h) |
| 95 mph (152.89 km/h) | 105.71 mph (170.13 km/h) |
| 100 mph (160.93 km/h) | 111.28 mph (179.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1906 | 2214 | 2385 | 2490 | 2604 | 2685 | 2774 | 2879 | 3025 | 3171 | 3334 | 3463 | 3699 | 3958 | 4161 | 4291 | 4364 | 4631 | 5005 | 5816 |
Better Fuel Economy Factory Ratios Increased Power
