Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/85-16 | 255/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.37 (618.9) | 28.03 (711.9) | 3.66 (93) 15% |
| Width inches (mm) | 4.92 (125) | 10.04 (255) | 5.12 (130) 104% |
| Circum. inches (mm) | 76.55 (1944.33) | 88.05 (2236.5) | 11.5 (292.17) 15% |
| Sidewall Height inches (mm) | 4.18 (106.25) | 3.51 (89.25) | -0.67 (-17) -16% |
| Revolutions per mile (km) | 827.71 (514.31) | 719.58 (447.13) | -108.13 (-67.19) -13.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.01 mph (37.02 km/h) |
| 25 mph (40.23 km/h) | 28.76 mph (46.28 km/h) |
| 30 mph (48.28 km/h) | 34.51 mph (55.54 km/h) |
| 35 mph (56.33 km/h) | 40.26 mph (64.79 km/h) |
| 40 mph (64.37 km/h) | 46.01 mph (74.05 km/h) |
| 45 mph (72.42 km/h) | 51.76 mph (83.3 km/h) |
| 50 mph (80.47 km/h) | 57.51 mph (92.56 km/h) |
| 55 mph (88.51 km/h) | 63.26 mph (101.81 km/h) |
| 60 mph (96.56 km/h) | 69.02 mph (111.07 km/h) |
| 65 mph (104.61 km/h) | 74.77 mph (120.33 km/h) |
| 70 mph (112.65 km/h) | 80.52 mph (129.58 km/h) |
| 75 mph (120.7 km/h) | 86.27 mph (138.84 km/h) |
| 80 mph (128.75 km/h) | 92.02 mph (148.09 km/h) |
| 85 mph (136.79 km/h) | 97.77 mph (157.35 km/h) |
| 90 mph (144.84 km/h) | 103.52 mph (166.61 km/h) |
| 95 mph (152.89 km/h) | 109.28 mph (175.86 km/h) |
| 100 mph (160.93 km/h) | 115.03 mph (185.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1831 | 2127 | 2291 | 2392 | 2501 | 2579 | 2665 | 2766 | 2907 | 3047 | 3203 | 3327 | 3553 | 3803 | 3997 | 4122 | 4192 | 4449 | 4808 | 5587 |
Better Fuel Economy Factory Ratios Increased Power
