Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-18 | 195/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 27.98 (710.7) | 1.48 (37.5) 5.6% |
| Width inches (mm) | 7.09 (180) | 7.68 (195) | 0.59 (15) 8.3% |
| Circum. inches (mm) | 83.26 (2114.92) | 87.9 (2232.73) | 4.64 (117.81) 5.6% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.99 (126.75) | 0.74 (18.75) 17.4% |
| Revolutions per mile (km) | 760.95 (472.83) | 720.8 (447.88) | -40.15 (-24.95) -5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.11 mph (33.98 km/h) |
| 25 mph (40.23 km/h) | 26.39 mph (42.47 km/h) |
| 30 mph (48.28 km/h) | 31.67 mph (50.97 km/h) |
| 35 mph (56.33 km/h) | 36.95 mph (59.46 km/h) |
| 40 mph (64.37 km/h) | 42.23 mph (67.96 km/h) |
| 45 mph (72.42 km/h) | 47.51 mph (76.45 km/h) |
| 50 mph (80.47 km/h) | 52.79 mph (84.95 km/h) |
| 55 mph (88.51 km/h) | 58.06 mph (93.44 km/h) |
| 60 mph (96.56 km/h) | 63.34 mph (101.94 km/h) |
| 65 mph (104.61 km/h) | 68.62 mph (110.43 km/h) |
| 70 mph (112.65 km/h) | 73.9 mph (118.93 km/h) |
| 75 mph (120.7 km/h) | 79.18 mph (127.42 km/h) |
| 80 mph (128.75 km/h) | 84.46 mph (135.92 km/h) |
| 85 mph (136.79 km/h) | 89.73 mph (144.41 km/h) |
| 90 mph (144.84 km/h) | 95.01 mph (152.91 km/h) |
| 95 mph (152.89 km/h) | 100.29 mph (161.4 km/h) |
| 100 mph (160.93 km/h) | 105.57 mph (169.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1834 | 2131 | 2295 | 2396 | 2506 | 2584 | 2669 | 2771 | 2911 | 3052 | 3208 | 3333 | 3559 | 3809 | 4004 | 4129 | 4199 | 4457 | 4816 | 5597 |
Better Fuel Economy Factory Ratios Increased Power
