I have a Ford Windstar with a 10" droped floor. It is too low! I would like to know how big a tire and or rim I can install to raise it up without rubbing?

If you still have the stock wheel wells you could definitely go with 20" rims and use say 245/40/20's which would raise you up an inch, or go with 18's and use 245/50/18's which would raise you .7". There's also alot of truck tire sizes you could try on your stock rims, but you'd really have to test fit them. Oversized tires on lowered windstars isn't something that's been thoroughly tested.