Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 375/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 32.72 (831) | 8.15 (207) 33.2% |
| Width inches (mm) | 5.31 (135) | 14.76 (375) | 9.45 (240) 177.8% |
| Circum. inches (mm) | 77.18 (1960.35) | 102.78 (2610.66) | 25.6 (650.31) 33.2% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 8.86 (225) | 4.07 (103.5) 85.2% |
| Revolutions per mile (km) | 820.95 (510.11) | 616.45 (383.04) | -204.5 (-127.07) -24.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.63 mph (42.86 km/h) |
| 25 mph (40.23 km/h) | 33.29 mph (53.58 km/h) |
| 30 mph (48.28 km/h) | 39.95 mph (64.3 km/h) |
| 35 mph (56.33 km/h) | 46.61 mph (75.01 km/h) |
| 40 mph (64.37 km/h) | 53.27 mph (85.73 km/h) |
| 45 mph (72.42 km/h) | 59.93 mph (96.44 km/h) |
| 50 mph (80.47 km/h) | 66.59 mph (107.16 km/h) |
| 55 mph (88.51 km/h) | 73.25 mph (117.88 km/h) |
| 60 mph (96.56 km/h) | 79.9 mph (128.59 km/h) |
| 65 mph (104.61 km/h) | 86.56 mph (139.31 km/h) |
| 70 mph (112.65 km/h) | 93.22 mph (150.03 km/h) |
| 75 mph (120.7 km/h) | 99.88 mph (160.74 km/h) |
| 80 mph (128.75 km/h) | 106.54 mph (171.46 km/h) |
| 85 mph (136.79 km/h) | 113.2 mph (182.17 km/h) |
| 90 mph (144.84 km/h) | 119.86 mph (192.89 km/h) |
| 95 mph (152.89 km/h) | 126.51 mph (203.61 km/h) |
| 100 mph (160.93 km/h) | 133.17 mph (214.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1569 | 1822 | 1963 | 2049 | 2143 | 2210 | 2283 | 2370 | 2490 | 2610 | 2744 | 2850 | 3044 | 3258 | 3425 | 3531 | 3591 | 3812 | 4119 | 4786 |
Better Fuel Economy Factory Ratios Increased Power
