Joe 
2008 Toyota Highlander SUV Limited 4dr SUV AWD (3.5L 6cyl 5A)
Excellent...except in snow
 Terrific vehicle in every way except incredibly poor, dangerous snow traction (on 4x4!!).  Problem appears to be Toyo A20 tire. Problem is worsened by availability of only 1 other factory sized alternative, a Bridgestone with an equally bad snow rating. Out of actual fear of factory tire snow traction during past two winters, I switched to 235-55x19 Yokohamas (at only 16,000 miles) with much better snow results thus far. Treadwear on factory tire was also very poor, and I drive in suburban traffic at 35-45 miles per hour  I may be forced to full snows if Yokos prove no better than Toyos after mileage accumulates.  I have alerted both Toyo and Toyota. 