 2000 250 with road sway
I have a 2000 Econoline 250 extended with 134,000 miles that i bought new and have loved.
This fall I bought all new Cooper all seasons tires for it and noticed a weird sway in the rear. It felt like it was slipping once in a while and when braking the whole vans feels momentarily out of control. I thought it was the tires so I bought a new set of firestone and it does the same thing. I first noticed this every time I put a set of snow tires on the year. My tire guy said its because the snows are soft and you get that mussy feel. We'll now I get it all the time.
Could this be a shock issue or is there some type of sway bar that is shot. It defintiely feels dangerous when I'm on a bumpy road. Its not a up and down bounce but a side to side shift.
Thanks for any help. | 
