Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/65-18 | 200/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.21 (691.2) | 25.87 (657.2) | -1.34 (-34) -4.9% |
| Width inches (mm) | 7.09 (180) | 7.87 (200) | 0.79 (20) 11.1% |
| Circum. inches (mm) | 85.49 (2171.47) | 81.29 (2064.65) | -4.21 (-106.81) -4.9% |
| Sidewall Height inches (mm) | 4.61 (117) | 3.94 (100) | -0.67 (-17) -14.5% |
| Revolutions per mile (km) | 741.13 (460.52) | 779.47 (484.34) | 38.34 (23.82) 5.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.02 mph (30.6 km/h) |
| 25 mph (40.23 km/h) | 23.77 mph (38.25 km/h) |
| 30 mph (48.28 km/h) | 28.52 mph (45.91 km/h) |
| 35 mph (56.33 km/h) | 33.28 mph (53.56 km/h) |
| 40 mph (64.37 km/h) | 38.03 mph (61.21 km/h) |
| 45 mph (72.42 km/h) | 42.79 mph (68.86 km/h) |
| 50 mph (80.47 km/h) | 47.54 mph (76.51 km/h) |
| 55 mph (88.51 km/h) | 52.29 mph (84.16 km/h) |
| 60 mph (96.56 km/h) | 57.05 mph (91.81 km/h) |
| 65 mph (104.61 km/h) | 61.8 mph (99.46 km/h) |
| 70 mph (112.65 km/h) | 66.56 mph (107.11 km/h) |
| 75 mph (120.7 km/h) | 71.31 mph (114.76 km/h) |
| 80 mph (128.75 km/h) | 76.06 mph (122.41 km/h) |
| 85 mph (136.79 km/h) | 80.82 mph (130.07 km/h) |
| 90 mph (144.84 km/h) | 85.57 mph (137.72 km/h) |
| 95 mph (152.89 km/h) | 90.33 mph (145.37 km/h) |
| 100 mph (160.93 km/h) | 95.08 mph (153.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | 2304 | 2482 | 2591 | 2710 | 2794 | 2887 | 2997 | 3148 | 3300 | 3469 | 3604 | 3849 | 4119 | 4330 | 4465 | 4541 | 4820 | 5208 | 6052 |
Better Fuel Economy Factory Ratios Increased Power
