but also check the front end for loose/worn parts so you don't wear the new tires prematurely, or the vibration could be more then one issue.

 

I went on interstate last night and I did not get speed wobble and I was going 65 there was a little vibration but that was just from the tires I think. Why would it not do the death wobble on the interstate at 0-65 but it does it at 45+ on city roads.