Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/70-17 | 305/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.81 (858.8) | 32.61 (828.3) | -1.2 (-30.5) -3.6% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 106.22 (2698) | 102.45 (2602.18) | -3.77 (-95.82) -3.6% |
| Sidewall Height inches (mm) | 8.41 (213.5) | 7.81 (198.25) | -0.6 (-15.25) -7.1% |
| Revolutions per mile (km) | 596.5 (370.64) | 618.46 (384.29) | 21.96 (13.65) 3.7% |
305/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.29 mph (31.04 km/h) |
| 25 mph (40.23 km/h) | 24.11 mph (38.8 km/h) |
| 30 mph (48.28 km/h) | 28.93 mph (46.57 km/h) |
| 35 mph (56.33 km/h) | 33.76 mph (54.33 km/h) |
| 40 mph (64.37 km/h) | 38.58 mph (62.09 km/h) |
| 45 mph (72.42 km/h) | 43.4 mph (69.85 km/h) |
| 50 mph (80.47 km/h) | 48.22 mph (77.61 km/h) |
| 55 mph (88.51 km/h) | 53.05 mph (85.37 km/h) |
| 60 mph (96.56 km/h) | 57.87 mph (93.13 km/h) |
| 65 mph (104.61 km/h) | 62.69 mph (100.89 km/h) |
| 70 mph (112.65 km/h) | 67.51 mph (108.65 km/h) |
| 75 mph (120.7 km/h) | 72.34 mph (116.41 km/h) |
| 80 mph (128.75 km/h) | 77.16 mph (124.18 km/h) |
| 85 mph (136.79 km/h) | 81.98 mph (131.94 km/h) |
| 90 mph (144.84 km/h) | 86.8 mph (139.7 km/h) |
| 95 mph (152.89 km/h) | 91.63 mph (147.46 km/h) |
| 100 mph (160.93 km/h) | 96.45 mph (155.22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1574 | 1828 | 1969 | 2056 | 2150 | 2217 | 2290 | 2378 | 2498 | 2619 | 2753 | 2860 | 3054 | 3268 | 3436 | 3543 | 3603 | 3824 | 4132 | 4802 |
Better Fuel Economy Factory Ratios Increased Power