My wife has a 2002 Highlander FWD. Whenever there is any wetness or slightly slick road, the front wheels seem to lose traction and spin out. It's gets so bad on hills sometimes that the car does not move forward at all. The tires are made by Michelin and have more than half their tread depth. I am at a loss to explain why it is spinning out so excessively. Has anyone else experienced this?