i have a 1984 toyota truck all stock and im about to put some 63 inch rear chevy springs and probably rears up front. my question is what size tires i can fit without any other mods and what tires i should get so i can off road and daily drive my truck ,also should i get 15 or 16 inch steelies and what brand and number is good thanks Nick

 

You can fit 33x10.5 R15 without a lift. Steelies are prety cheap in price you can build a tire kit at 4wheelparts.com

 

I agree with the 33x10.50 recommendation above, but you will need the lift to fit them on a SFA '84. (They would fit with no lift on an IFS 86-95)

15" are A LOT cheaper than 16's

 

If you are going to swap springs, do some research and see what other components you might use to get some lift and run some 35s.

I get all my tire/rim combos from 4wheelparts when they have their free shipping/sales.