Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/90-16 | 185/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.28 (667.4) | 28.38 (720.9) | 2.11 (53.5) 8% |
| Width inches (mm) | 5.71 (145) | 7.28 (185) | 1.57 (40) 27.6% |
| Circum. inches (mm) | 82.55 (2096.7) | 89.16 (2264.77) | 6.62 (168.08) 8% |
| Sidewall Height inches (mm) | 5.14 (130.5) | 6.19 (157.25) | 1.05 (26.75) 20.5% |
| Revolutions per mile (km) | 767.56 (476.94) | 710.6 (441.54) | -56.96 (-35.39) -7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.6 mph (34.77 km/h) |
| 25 mph (40.23 km/h) | 27 mph (43.46 km/h) |
| 30 mph (48.28 km/h) | 32.4 mph (52.15 km/h) |
| 35 mph (56.33 km/h) | 37.81 mph (60.84 km/h) |
| 40 mph (64.37 km/h) | 43.21 mph (69.53 km/h) |
| 45 mph (72.42 km/h) | 48.61 mph (78.23 km/h) |
| 50 mph (80.47 km/h) | 54.01 mph (86.92 km/h) |
| 55 mph (88.51 km/h) | 59.41 mph (95.61 km/h) |
| 60 mph (96.56 km/h) | 64.81 mph (104.3 km/h) |
| 65 mph (104.61 km/h) | 70.21 mph (112.99 km/h) |
| 70 mph (112.65 km/h) | 75.61 mph (121.68 km/h) |
| 75 mph (120.7 km/h) | 81.01 mph (130.38 km/h) |
| 80 mph (128.75 km/h) | 86.41 mph (139.07 km/h) |
| 85 mph (136.79 km/h) | 91.81 mph (147.76 km/h) |
| 90 mph (144.84 km/h) | 97.21 mph (156.45 km/h) |
| 95 mph (152.89 km/h) | 102.62 mph (165.14 km/h) |
| 100 mph (160.93 km/h) | 108.02 mph (173.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1808 | 2101 | 2262 | 2362 | 2470 | 2547 | 2632 | 2732 | 2870 | 3009 | 3163 | 3286 | 3509 | 3755 | 3948 | 4071 | 4140 | 4394 | 4748 | 5517 |
Better Fuel Economy Factory Ratios Increased Power
