Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/75-15 | 32/11.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.6 (853.5) | 32.01 (813.16) | -1.59 (-40.34) -4.7% |
| Width inches (mm) | 12.4 (315) | 11.5 (292) | -0.91 (-23) -7.3% |
| Circum. inches (mm) | 105.56 (2681.35) | 100.58 (2554.62) | -4.99 (-126.73) -4.7% |
| Sidewall Height inches (mm) | 9.3 (236.25) | 8.51 (216.08) | -0.79 (-20.17) -8.5% |
| Revolutions per mile (km) | 600.2 (372.95) | 629.97 (391.45) | 29.78 (18.5) 5% |
32/11.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.05 mph (30.67 km/h) |
| 25 mph (40.23 km/h) | 23.82 mph (38.33 km/h) |
| 30 mph (48.28 km/h) | 28.58 mph (46 km/h) |
| 35 mph (56.33 km/h) | 33.35 mph (53.66 km/h) |
| 40 mph (64.37 km/h) | 38.11 mph (61.33 km/h) |
| 45 mph (72.42 km/h) | 42.87 mph (69 km/h) |
| 50 mph (80.47 km/h) | 47.64 mph (76.66 km/h) |
| 55 mph (88.51 km/h) | 52.4 mph (84.33 km/h) |
| 60 mph (96.56 km/h) | 57.16 mph (92 km/h) |
| 65 mph (104.61 km/h) | 61.93 mph (99.66 km/h) |
| 70 mph (112.65 km/h) | 66.69 mph (107.33 km/h) |
| 75 mph (120.7 km/h) | 71.46 mph (115 km/h) |
| 80 mph (128.75 km/h) | 76.22 mph (122.66 km/h) |
| 85 mph (136.79 km/h) | 80.98 mph (130.33 km/h) |
| 90 mph (144.84 km/h) | 85.75 mph (138 km/h) |
| 95 mph (152.89 km/h) | 90.51 mph (145.66 km/h) |
| 100 mph (160.93 km/h) | 95.27 mph (153.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1603 | 1862 | 2006 | 2094 | 2190 | 2258 | 2333 | 2422 | 2545 | 2667 | 2804 | 2913 | 3111 | 3329 | 3500 | 3609 | 3670 | 3895 | 4209 | 4891 |
Better Fuel Economy Factory Ratios Increased Power
