Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-18 | 130/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.17 (639.2) | 26.19 (665.2) | 1.02 (26) 4.1% |
| Width inches (mm) | 5.12 (130) | 5.12 (130) | 0 (0) 0% |
| Circum. inches (mm) | 79.06 (2008.11) | 82.28 (2089.79) | 3.22 (81.68) 4.1% |
| Sidewall Height inches (mm) | 3.58 (91) | 4.09 (104) | 0.51 (13) 14.3% |
| Revolutions per mile (km) | 801.42 (497.98) | 770.1 (478.52) | -31.32 (-19.46) -3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.81 mph (33.5 km/h) |
| 25 mph (40.23 km/h) | 26.02 mph (41.87 km/h) |
| 30 mph (48.28 km/h) | 31.22 mph (50.24 km/h) |
| 35 mph (56.33 km/h) | 36.42 mph (58.62 km/h) |
| 40 mph (64.37 km/h) | 41.63 mph (66.99 km/h) |
| 45 mph (72.42 km/h) | 46.83 mph (75.37 km/h) |
| 50 mph (80.47 km/h) | 52.03 mph (83.74 km/h) |
| 55 mph (88.51 km/h) | 57.24 mph (92.11 km/h) |
| 60 mph (96.56 km/h) | 62.44 mph (100.49 km/h) |
| 65 mph (104.61 km/h) | 67.64 mph (108.86 km/h) |
| 70 mph (112.65 km/h) | 72.85 mph (117.24 km/h) |
| 75 mph (120.7 km/h) | 78.05 mph (125.61 km/h) |
| 80 mph (128.75 km/h) | 83.25 mph (133.98 km/h) |
| 85 mph (136.79 km/h) | 88.46 mph (142.36 km/h) |
| 90 mph (144.84 km/h) | 93.66 mph (150.73 km/h) |
| 95 mph (152.89 km/h) | 98.86 mph (159.11 km/h) |
| 100 mph (160.93 km/h) | 104.07 mph (167.48 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
