Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/90-15 | 175/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.86 (606) | 26.71 (678.5) | 2.85 (72.5) 12% |
| Width inches (mm) | 4.92 (125) | 6.89 (175) | 1.97 (50) 40% |
| Circum. inches (mm) | 74.95 (1903.81) | 83.92 (2131.57) | 8.97 (227.77) 12% |
| Sidewall Height inches (mm) | 4.43 (112.5) | 5.86 (148.75) | 1.43 (36.25) 32.2% |
| Revolutions per mile (km) | 845.33 (525.26) | 755 (469.14) | -90.33 (-56.13) -10.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.39 mph (36.04 km/h) |
| 25 mph (40.23 km/h) | 27.99 mph (45.05 km/h) |
| 30 mph (48.28 km/h) | 33.59 mph (54.06 km/h) |
| 35 mph (56.33 km/h) | 39.19 mph (63.07 km/h) |
| 40 mph (64.37 km/h) | 44.79 mph (72.08 km/h) |
| 45 mph (72.42 km/h) | 50.38 mph (81.08 km/h) |
| 50 mph (80.47 km/h) | 55.98 mph (90.09 km/h) |
| 55 mph (88.51 km/h) | 61.58 mph (99.1 km/h) |
| 60 mph (96.56 km/h) | 67.18 mph (108.11 km/h) |
| 65 mph (104.61 km/h) | 72.78 mph (117.12 km/h) |
| 70 mph (112.65 km/h) | 78.37 mph (126.13 km/h) |
| 75 mph (120.7 km/h) | 83.97 mph (135.14 km/h) |
| 80 mph (128.75 km/h) | 89.57 mph (144.15 km/h) |
| 85 mph (136.79 km/h) | 95.17 mph (153.16 km/h) |
| 90 mph (144.84 km/h) | 100.77 mph (162.17 km/h) |
| 95 mph (152.89 km/h) | 106.37 mph (171.18 km/h) |
| 100 mph (160.93 km/h) | 111.96 mph (180.19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1921 | 2232 | 2404 | 2510 | 2624 | 2706 | 2796 | 2902 | 3050 | 3197 | 3360 | 3491 | 3728 | 3990 | 4194 | 4325 | 4399 | 4668 | 5045 | 5862 |
Better Fuel Economy Factory Ratios Increased Power
