www.avants.com

Looks like they have some nice member perks when it comes to tires.

10% off at Discount Tire and 10% from Michelin and it appears that can be stacked.
Use the 10% at Discount Tire then send that invoice to Michelin for another 10%

That would save me about $300 on tires. Membership is $100 a year and you get a $70 Griots Giftcard for joining.
So $30 to save $300 sounds pretty good.