Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 90/90-19 | 120/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.38 (644.6) | 24.56 (623.8) | -0.82 (-20.8) -3.2% |
| Width inches (mm) | 3.54 (90) | 4.72 (120) | 1.18 (30) 33.3% |
| Circum. inches (mm) | 79.73 (2025.07) | 77.15 (1959.73) | -2.57 (-65.35) -3.2% |
| Sidewall Height inches (mm) | 3.19 (81) | 3.78 (96) | 0.59 (15) 18.5% |
| Revolutions per mile (km) | 794.71 (493.81) | 821.21 (510.27) | 26.5 (16.47) 3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.15 km/h) |
| 25 mph (40.23 km/h) | 24.19 mph (38.94 km/h) |
| 30 mph (48.28 km/h) | 29.03 mph (46.72 km/h) |
| 35 mph (56.33 km/h) | 33.87 mph (54.51 km/h) |
| 40 mph (64.37 km/h) | 38.71 mph (62.3 km/h) |
| 45 mph (72.42 km/h) | 43.55 mph (70.08 km/h) |
| 50 mph (80.47 km/h) | 48.39 mph (77.87 km/h) |
| 55 mph (88.51 km/h) | 53.23 mph (85.66 km/h) |
| 60 mph (96.56 km/h) | 58.06 mph (93.44 km/h) |
| 65 mph (104.61 km/h) | 62.9 mph (101.23 km/h) |
| 70 mph (112.65 km/h) | 67.74 mph (109.02 km/h) |
| 75 mph (120.7 km/h) | 72.58 mph (116.81 km/h) |
| 80 mph (128.75 km/h) | 77.42 mph (124.59 km/h) |
| 85 mph (136.79 km/h) | 82.26 mph (132.38 km/h) |
| 90 mph (144.84 km/h) | 87.1 mph (140.17 km/h) |
| 95 mph (152.89 km/h) | 91.93 mph (147.95 km/h) |
| 100 mph (160.93 km/h) | 96.77 mph (155.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2090 | 2428 | 2614 | 2730 | 2855 | 2944 | 3041 | 3157 | 3317 | 3477 | 3655 | 3797 | 4055 | 4340 | 4562 | 4704 | 4784 | 5078 | 5487 | 6376 |
Better Fuel Economy Factory Ratios Increased Power
