I tried ordering 4 tires from them last summer and just got about fucked if it weren't for paying through Paypal.
I went almost 3 weeks without a confirmation or receipt email before trying to email them several times. After no email replies, I called multiple times a day obviously without any answers on their end.
They ironically took the money right out of my account, well Paypal did, the day I purchased the tires. After almost a month without word from online tires, I opened a dispute which was promptly handled by Paypal. I got my money back from Paypal and swore to myself to keep others from trying to purchase from those scumbags and wasting their time and money!
Do as Juco told me -- find a reputable tire vendor elsewhere that does price matching and give them online tire's prices for the tires you want. I agree they have awesome prices, but I didn't listen to my gut when I thought it was too good to be true (kind of like RPM Outlet).