Supra Question

[DeltarMN]

Well I test drove the car, it seems alright with slow driving, whent I floored it it held about 4-5 psi. But after speeds of about 60mph there is alot of wheel vibrations, the tires are really worn, would that cause it or is it probably that and alignment? Also I think the headgasket is starting to leak oil, but im not sure i am having some one else from a performance shop look at it tomarrow. There is a little bit of rust in the back under the spare, were there is some standing water, so it is leaking some were back there. but the transmission seemed to shift strong and fine.