Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 185/35-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 22.1 (561.3) | 0.9 (22.9) 4.3% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 66.59 (1691.43) | 69.42 (1763.38) | 2.83 (71.94) 4.3% |
| Sidewall Height inches (mm) | 2.6 (66) | 2.55 (64.75) | -0.05 (-1.25) -1.9% |
| Revolutions per mile (km) | 951.47 (591.21) | 912.65 (567.09) | -38.82 (-24.12) -4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.85 mph (33.56 km/h) |
| 25 mph (40.23 km/h) | 26.06 mph (41.94 km/h) |
| 30 mph (48.28 km/h) | 31.28 mph (50.33 km/h) |
| 35 mph (56.33 km/h) | 36.49 mph (58.72 km/h) |
| 40 mph (64.37 km/h) | 41.7 mph (67.11 km/h) |
| 45 mph (72.42 km/h) | 46.91 mph (75.5 km/h) |
| 50 mph (80.47 km/h) | 52.13 mph (83.89 km/h) |
| 55 mph (88.51 km/h) | 57.34 mph (92.28 km/h) |
| 60 mph (96.56 km/h) | 62.55 mph (100.67 km/h) |
| 65 mph (104.61 km/h) | 67.76 mph (109.06 km/h) |
| 70 mph (112.65 km/h) | 72.98 mph (117.45 km/h) |
| 75 mph (120.7 km/h) | 78.19 mph (125.83 km/h) |
| 80 mph (128.75 km/h) | 83.4 mph (134.22 km/h) |
| 85 mph (136.79 km/h) | 88.62 mph (142.61 km/h) |
| 90 mph (144.84 km/h) | 93.83 mph (151 km/h) |
| 95 mph (152.89 km/h) | 99.04 mph (159.39 km/h) |
| 100 mph (160.93 km/h) | 104.25 mph (167.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2323 | 2698 | 2906 | 3034 | 3172 | 3271 | 3380 | 3508 | 3686 | 3864 | 4062 | 4220 | 4507 | 4823 | 5070 | 5228 | 5317 | 5643 | 6098 | 7086 |
Better Fuel Economy Factory Ratios Increased Power
