Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/70-18 | 130/65-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.92 (709.2) | 22.65 (575.4) | -5.27 (-133.8) -18.9% |
| Width inches (mm) | 7.09 (180) | 5.12 (130) | -1.97 (-50) -27.8% |
| Circum. inches (mm) | 87.72 (2228.02) | 71.17 (1807.67) | -16.55 (-420.35) -18.9% |
| Sidewall Height inches (mm) | 4.96 (126) | 3.33 (84.5) | -1.63 (-41.5) -32.9% |
| Revolutions per mile (km) | 722.32 (448.83) | 890.29 (553.2) | 167.96 (104.37) 23.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.23 mph (26.11 km/h) |
| 25 mph (40.23 km/h) | 20.28 mph (32.64 km/h) |
| 30 mph (48.28 km/h) | 24.34 mph (39.17 km/h) |
| 35 mph (56.33 km/h) | 28.4 mph (45.7 km/h) |
| 40 mph (64.37 km/h) | 32.45 mph (52.23 km/h) |
| 45 mph (72.42 km/h) | 36.51 mph (58.76 km/h) |
| 50 mph (80.47 km/h) | 40.57 mph (65.29 km/h) |
| 55 mph (88.51 km/h) | 44.62 mph (71.81 km/h) |
| 60 mph (96.56 km/h) | 48.68 mph (78.34 km/h) |
| 65 mph (104.61 km/h) | 52.74 mph (84.87 km/h) |
| 70 mph (112.65 km/h) | 56.79 mph (91.4 km/h) |
| 75 mph (120.7 km/h) | 60.85 mph (97.93 km/h) |
| 80 mph (128.75 km/h) | 64.91 mph (104.46 km/h) |
| 85 mph (136.79 km/h) | 68.96 mph (110.99 km/h) |
| 90 mph (144.84 km/h) | 73.02 mph (117.52 km/h) |
| 95 mph (152.89 km/h) | 77.08 mph (124.04 km/h) |
| 100 mph (160.93 km/h) | 81.13 mph (130.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2266 | 2632 | 2834 | 2960 | 3095 | 3191 | 3297 | 3423 | 3596 | 3770 | 3962 | 4117 | 4396 | 4705 | 4946 | 5100 | 5187 | 5505 | 5948 | 6913 |
Better Fuel Economy Factory Ratios Increased Power
