quick easy question..1968 firebird

[wookham]

I don't remember the tire size I need for the front....1968 firebird im going to run a set of the 17 inch billet ralleys on the car...will this combo fit.....fronts will be a 17x8 245/40-17 4.5 bs....rear 17x9 275/40-17 5.0 bs...the car is stock ride height..may drop it two inches

thanks in advance