Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-13 | 185/90-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.65 (600.8) | 26.11 (663.2) | 2.46 (62.4) 10.4% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 74.31 (1887.47) | 82.03 (2083.5) | 7.72 (196.04) 10.4% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 6.56 (166.5) | 1.23 (31.2) 23.1% |
| Revolutions per mile (km) | 852.65 (529.81) | 772.42 (479.96) | -80.22 (-49.85) -9.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.08 mph (35.53 km/h) |
| 25 mph (40.23 km/h) | 27.6 mph (44.41 km/h) |
| 30 mph (48.28 km/h) | 33.12 mph (53.29 km/h) |
| 35 mph (56.33 km/h) | 38.64 mph (62.18 km/h) |
| 40 mph (64.37 km/h) | 44.15 mph (71.06 km/h) |
| 45 mph (72.42 km/h) | 49.67 mph (79.94 km/h) |
| 50 mph (80.47 km/h) | 55.19 mph (88.82 km/h) |
| 55 mph (88.51 km/h) | 60.71 mph (97.71 km/h) |
| 60 mph (96.56 km/h) | 66.23 mph (106.59 km/h) |
| 65 mph (104.61 km/h) | 71.75 mph (115.47 km/h) |
| 70 mph (112.65 km/h) | 77.27 mph (124.35 km/h) |
| 75 mph (120.7 km/h) | 82.79 mph (133.24 km/h) |
| 80 mph (128.75 km/h) | 88.31 mph (142.12 km/h) |
| 85 mph (136.79 km/h) | 93.83 mph (151 km/h) |
| 90 mph (144.84 km/h) | 99.35 mph (159.88 km/h) |
| 95 mph (152.89 km/h) | 104.87 mph (168.77 km/h) |
| 100 mph (160.93 km/h) | 110.39 mph (177.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1966 | 2284 | 2459 | 2568 | 2685 | 2769 | 2861 | 2969 | 3120 | 3271 | 3438 | 3572 | 3814 | 4082 | 4291 | 4425 | 4500 | 4776 | 5161 | 5997 |
Better Fuel Economy Factory Ratios Increased Power
