Thanks for the input on the alignment, guys. But at this point, I'm more concerned about what could be causing the vibration I'm having. The alignment wouldn't have anything to do with that, would it?

 

The two are probably not related. If they were the shop would've probably pointed it out to get money for fixing the problem.

If you put the stock rims/tires back on and it goes away, then one of your new rims is bent. You could also take it to a shop and have them 'verify' the balance or truness of them but you'll probably get charged for that. Just do the swap and see what happens.

As for the alignment. Finally PROOF that it's a good idea to get CC (Camber Caster) plates for dropped mustangs. The 'Custom' alignment sometimes includes redrilling the mounting holes for the struts to get the right angles on the strut for the changed steering angles. The CC plates avoid this and give you a greater range of alignment options.

 

Just a thought but did you have the arrows pointing out on the top of the struts and your springs spun in the right direction?

 

Yep. That was one thing I made certain of.

 

Well, considering you bought just about the cheapest tires possible for the car....... You get what you pay for. Kuhmo tires suck. And are cheap.

I would swap the fronts 1st with stock and drive, see how it is.
Vibration in the steering wheel usually indicates front wheel/tire issue, If its in your butt/seat then usually the rears.

Next step would be to find a shop that has a Road Force Balancer.

 

get your tires balanced.

 

He said he did that... twice:

 

3rd time is a charm! But one that is capable of Road Force Balancing the tires

Simular to what we have at our shop.
http://www.gsp9700.com/

 

Tire Rack (where he got them) uses a Road Force Balancer.

 

make sure proper torque on the lug nuts, air pressure checked.
weve had to do rebalancing a few times here, sometimes it can take a few times.
Not only road force, but match mount the tire/wheel combo to its best fitment

Really all I can offer. Put the stock wheels back on and taken for a ride yet?