Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 215/75-17.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 30.2 (767) | 3.12 (79.28) 11.5% |
| Width inches (mm) | 8.5 (216) | 8.46 (215) | -0.04 (-1) -0.5% |
| Circum. inches (mm) | 85.06 (2160.54) | 94.87 (2409.6) | 9.81 (249.07) 11.5% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 6.35 (161.25) | 0.31 (7.89) 5.1% |
| Revolutions per mile (km) | 744.88 (462.85) | 667.89 (415.01) | -76.99 (-47.84) -10.3% |
215/75-17.5 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.31 mph (35.9 km/h) |
| 25 mph (40.23 km/h) | 27.88 mph (44.87 km/h) |
| 30 mph (48.28 km/h) | 33.46 mph (53.85 km/h) |
| 35 mph (56.33 km/h) | 39.03 mph (62.82 km/h) |
| 40 mph (64.37 km/h) | 44.61 mph (71.79 km/h) |
| 45 mph (72.42 km/h) | 50.19 mph (80.77 km/h) |
| 50 mph (80.47 km/h) | 55.76 mph (89.74 km/h) |
| 55 mph (88.51 km/h) | 61.34 mph (98.72 km/h) |
| 60 mph (96.56 km/h) | 66.92 mph (107.69 km/h) |
| 65 mph (104.61 km/h) | 72.49 mph (116.67 km/h) |
| 70 mph (112.65 km/h) | 78.07 mph (125.64 km/h) |
| 75 mph (120.7 km/h) | 83.65 mph (134.62 km/h) |
| 80 mph (128.75 km/h) | 89.22 mph (143.59 km/h) |
| 85 mph (136.79 km/h) | 94.8 mph (152.56 km/h) |
| 90 mph (144.84 km/h) | 100.38 mph (161.54 km/h) |
| 95 mph (152.89 km/h) | 105.95 mph (170.51 km/h) |
| 100 mph (160.93 km/h) | 111.53 mph (179.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1700 | 1974 | 2126 | 2220 | 2322 | 2394 | 2474 | 2568 | 2698 | 2828 | 2973 | 3088 | 3298 | 3529 | 3710 | 3826 | 3891 | 4130 | 4462 | 5186 |
Better Fuel Economy Factory Ratios Increased Power
