Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-15 | 32/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.71 (780) | 32.03 (813.54) | 1.32 (33.54) 4.3% |
| Width inches (mm) | 11.22 (285) | 10.51 (267) | -0.71 (-18) -6.3% |
| Circum. inches (mm) | 96.47 (2450.44) | 100.62 (2555.81) | 4.15 (105.37) 4.3% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 8.51 (216.27) | 0.66 (16.77) 8.4% |
| Revolutions per mile (km) | 656.76 (408.09) | 629.68 (391.26) | -27.08 (-16.82) -4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.86 mph (33.57 km/h) |
| 25 mph (40.23 km/h) | 26.08 mph (41.96 km/h) |
| 30 mph (48.28 km/h) | 31.29 mph (50.36 km/h) |
| 35 mph (56.33 km/h) | 36.51 mph (58.75 km/h) |
| 40 mph (64.37 km/h) | 41.72 mph (67.14 km/h) |
| 45 mph (72.42 km/h) | 46.94 mph (75.53 km/h) |
| 50 mph (80.47 km/h) | 52.15 mph (83.93 km/h) |
| 55 mph (88.51 km/h) | 57.37 mph (92.32 km/h) |
| 60 mph (96.56 km/h) | 62.58 mph (100.71 km/h) |
| 65 mph (104.61 km/h) | 67.8 mph (109.11 km/h) |
| 70 mph (112.65 km/h) | 73.01 mph (117.5 km/h) |
| 75 mph (120.7 km/h) | 78.23 mph (125.89 km/h) |
| 80 mph (128.75 km/h) | 83.44 mph (134.28 km/h) |
| 85 mph (136.79 km/h) | 88.66 mph (142.68 km/h) |
| 90 mph (144.84 km/h) | 93.87 mph (151.07 km/h) |
| 95 mph (152.89 km/h) | 99.09 mph (159.46 km/h) |
| 100 mph (160.93 km/h) | 104.3 mph (167.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1602 | 1862 | 2005 | 2093 | 2189 | 2257 | 2332 | 2421 | 2543 | 2666 | 2803 | 2912 | 3109 | 3328 | 3498 | 3607 | 3669 | 3894 | 4207 | 4889 |
Better Fuel Economy Factory Ratios Increased Power
