Deal tip: eBay Bucks

EBay bucks is their rewards program that gives cash back for purchases.

https://pages.ebay.com/rewards/faq.html

Usually it pays 1% on qualifying items, but frequently there are promotions for more. I've been using this program for years and have scored some great deals on car/truck parts. The highest I've seen is around 12%, and frequently they'll have 6 or 8.

Example deal I just bought:
285/70/18 Ridge Grapplers from custom wheel and tire's ebay store: $1184 shipped, no sales tax
-10% ebay bucks
= 1065.74 net after cash back

At the time of this post, all include 8.25% TX sales tax
discount tire ebay: 1206.27 after $75 rebate and cash back
tirebuyer ebay: 1272.61 after cash back
discount tire direct website: 1137.38 after $75 and $100 rebate if you use their credit card
My local guy wanted $1350 including installation, so around $1250-1275

Happy hunting!