Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-17 | 130/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.19 (639.8) | 26.19 (665.2) | 1 (25.4) 4% |
| Width inches (mm) | 5.12 (130) | 5.12 (130) | 0 (0) 0% |
| Circum. inches (mm) | 79.13 (2009.99) | 82.28 (2089.79) | 3.14 (79.8) 4% |
| Sidewall Height inches (mm) | 4.09 (104) | 4.09 (104) | 0 (0) 0% |
| Revolutions per mile (km) | 800.67 (497.51) | 770.1 (478.52) | -30.57 (-19) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.79 mph (33.46 km/h) |
| 25 mph (40.23 km/h) | 25.99 mph (41.83 km/h) |
| 30 mph (48.28 km/h) | 31.19 mph (50.2 km/h) |
| 35 mph (56.33 km/h) | 36.39 mph (58.56 km/h) |
| 40 mph (64.37 km/h) | 41.59 mph (66.93 km/h) |
| 45 mph (72.42 km/h) | 46.79 mph (75.3 km/h) |
| 50 mph (80.47 km/h) | 51.98 mph (83.66 km/h) |
| 55 mph (88.51 km/h) | 57.18 mph (92.03 km/h) |
| 60 mph (96.56 km/h) | 62.38 mph (100.39 km/h) |
| 65 mph (104.61 km/h) | 67.58 mph (108.76 km/h) |
| 70 mph (112.65 km/h) | 72.78 mph (117.13 km/h) |
| 75 mph (120.7 km/h) | 77.98 mph (125.49 km/h) |
| 80 mph (128.75 km/h) | 83.18 mph (133.86 km/h) |
| 85 mph (136.79 km/h) | 88.37 mph (142.23 km/h) |
| 90 mph (144.84 km/h) | 93.57 mph (150.59 km/h) |
| 95 mph (152.89 km/h) | 98.77 mph (158.96 km/h) |
| 100 mph (160.93 km/h) | 103.97 mph (167.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960 | 2277 | 2452 | 2560 | 2677 | 2760 | 2852 | 2960 | 3111 | 3261 | 3427 | 3561 | 3803 | 4070 | 4278 | 4412 | 4487 | 4762 | 5145 | 5979 |
Better Fuel Economy Factory Ratios Increased Power
