Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 305/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 27.01 (686) | 2.44 (62) 9.9% |
| Width inches (mm) | 5.31 (135) | 12.01 (305) | 6.69 (170) 125.9% |
| Circum. inches (mm) | 77.18 (1960.35) | 84.85 (2155.13) | 7.67 (194.78) 9.9% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 6 (152.5) | 1.22 (31) 25.5% |
| Revolutions per mile (km) | 820.95 (510.11) | 746.75 (464.01) | -74.2 (-46.1) -9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.99 mph (35.39 km/h) |
| 25 mph (40.23 km/h) | 27.48 mph (44.23 km/h) |
| 30 mph (48.28 km/h) | 32.98 mph (53.08 km/h) |
| 35 mph (56.33 km/h) | 38.48 mph (61.92 km/h) |
| 40 mph (64.37 km/h) | 43.97 mph (70.77 km/h) |
| 45 mph (72.42 km/h) | 49.47 mph (79.62 km/h) |
| 50 mph (80.47 km/h) | 54.97 mph (88.46 km/h) |
| 55 mph (88.51 km/h) | 60.46 mph (97.31 km/h) |
| 60 mph (96.56 km/h) | 65.96 mph (106.16 km/h) |
| 65 mph (104.61 km/h) | 71.46 mph (115 km/h) |
| 70 mph (112.65 km/h) | 76.96 mph (123.85 km/h) |
| 75 mph (120.7 km/h) | 82.45 mph (132.69 km/h) |
| 80 mph (128.75 km/h) | 87.95 mph (141.54 km/h) |
| 85 mph (136.79 km/h) | 93.45 mph (150.39 km/h) |
| 90 mph (144.84 km/h) | 98.94 mph (159.23 km/h) |
| 95 mph (152.89 km/h) | 104.44 mph (168.08 km/h) |
| 100 mph (160.93 km/h) | 109.94 mph (176.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1900 | 2208 | 2377 | 2483 | 2596 | 2677 | 2766 | 2871 | 3016 | 3162 | 3324 | 3453 | 3687 | 3946 | 4148 | 4278 | 4351 | 4617 | 4989 | 5798 |
Better Fuel Economy Factory Ratios Increased Power
