please post pics and sizes. tires on ralley wheels

[jasonroman]

just picked up a 85 sierra. long story....
anyway, aside from other problems, i need tires.
i have stock ralleys on truck.
what i want....is a fatter/wider, widest tire i can run in rear. with a nice profile.
and a not so wide, yet not so slim front tire.
i figure i need to spend money on tires, so id like to put on a nice set up rather then the same front and back.

please help me out. tires are needed asap.
pics and sizes would be great. sooner the better.
i need tires!!