New tire keeps leaking

[DirtyBird69]

I went to town fair tire in Brockton and got 4 brand new bfgoodrich g force comp 2 a/s put on the ol' T/A. I have American Racing 18" rogue wheels on the car. After a couple of days I noticed 2 of the tires were low. I brought it back a second time and the left front was still leaking. I brought it back a 3rd time ... same deal. As a last resort I emptied an entire bottle of green slime. No improvement. i have had the car for 4 years and it only goes out from april to november 9 so no salt/snow. The guy I bought it from also never drove it in winter. I had the car for 3.5 years with the old tires on it and never had this problem. Should I try going to another tire shop of just buy a new wheel. I jacked the car up and inspected the wheel for dents etc... it seems perfect. I am pissed cause I dropped over $600 Grrr...