A minor problem with my 84 mustang....`

I recently got a 1984 mustang....it has wide tires, and they rub the fender on the back whenever we hit a bump...we just paid $100 for new springs....but..it still rubs....any advice?? :sly:

What size are the tires in the back.... my thought is the shocks in the back need to be replaced.

Im with gtstang, either drop the size of the tires or get a stiffer shock to help support the body