Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-15 | 190/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.5 (597) | 24.72 (628) | 1.22 (31) 5.2% |
| Width inches (mm) | 7.09 (180) | 7.48 (190) | 0.39 (10) 5.6% |
| Circum. inches (mm) | 73.84 (1875.53) | 77.67 (1972.92) | 3.83 (97.39) 5.2% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.86 (123.5) | 0.61 (15.5) 14.4% |
| Revolutions per mile (km) | 858.07 (533.18) | 815.72 (506.86) | -42.36 (-26.32) -4.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.04 mph (33.86 km/h) |
| 25 mph (40.23 km/h) | 26.3 mph (42.32 km/h) |
| 30 mph (48.28 km/h) | 31.56 mph (50.79 km/h) |
| 35 mph (56.33 km/h) | 36.82 mph (59.25 km/h) |
| 40 mph (64.37 km/h) | 42.08 mph (67.72 km/h) |
| 45 mph (72.42 km/h) | 47.34 mph (76.18 km/h) |
| 50 mph (80.47 km/h) | 52.6 mph (84.65 km/h) |
| 55 mph (88.51 km/h) | 57.86 mph (93.11 km/h) |
| 60 mph (96.56 km/h) | 63.12 mph (101.57 km/h) |
| 65 mph (104.61 km/h) | 68.38 mph (110.04 km/h) |
| 70 mph (112.65 km/h) | 73.63 mph (118.5 km/h) |
| 75 mph (120.7 km/h) | 78.89 mph (126.97 km/h) |
| 80 mph (128.75 km/h) | 84.15 mph (135.43 km/h) |
| 85 mph (136.79 km/h) | 89.41 mph (143.9 km/h) |
| 90 mph (144.84 km/h) | 94.67 mph (152.36 km/h) |
| 95 mph (152.89 km/h) | 99.93 mph (160.83 km/h) |
| 100 mph (160.93 km/h) | 105.19 mph (169.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2076 | 2412 | 2597 | 2712 | 2836 | 2924 | 3021 | 3136 | 3295 | 3454 | 3631 | 3772 | 4028 | 4311 | 4532 | 4673 | 4752 | 5044 | 5450 | 6334 |
Better Fuel Economy Factory Ratios Increased Power
