So my 2007 g35 sport sedan is at 26k mi and the tread on tires is worn how much are you guys paying to replace the whole set I went to American tire.com and for stock replacement they are charging $1150 installed these are bridgestone potenzas. Are there any quality tires that are cheaper? If so what kind and where can I get them im in San Jose, ca

 

You can get all 4 for around $500-600 installed. Just look around your local area. Potenza's are an expensive tire normally, but you can find some Kumho, Falken, Federal or something similar for almost half the price.
Check on tirerack.com for prices and mount/balance for each wheel will be $25 at most. If you purchase from a local store, they usually install for free though.
What size wheel do you have?

 

Depending on your driving style, I wouldnt recommend the cheapest tires. They have no traction and usually wear out more quickly. A really good value brand is Hankook. It is about half the price of potenzas and has really good reviews.

 

+1 Still around the price I gave you though. I just didn't include Hankook. In my opinion Falken/Hankook/Kumho are all similar...

 

FK452/V12EVO aren't quite as good as the RE050A, but at half the price, most people just don't care...