I just bought some 305/45/18 Nitto DR's the other day total price including taxes & shipping was $454.65 It is the Discount Tire Store in Plano, TX. The phone # is 972-377-8242. Ask for James T. Make sure you say the T. there are 2 James. You don't need a Group Purchase, just call. It is already part of a group purchase from dfwstangs.net Tell him that "JOEY" sent you. He priced them to me at $497 at first, but I told him he couldn't beat Victoria Tire, so he gave me that deal for $454.65 He will work with you. We live in different places, so the price may be a little different.