Need your input

[rmtt]

I have a lowered on stock bolts 1999 FRC that puts down 465/424. What is the bigest tire I can run on the back with 19X11 wheels? 305/30/19, 295/30/19, etc. I have 18" wheels for the front, so I would need a size that would fit nicely with those as well so traction control doesn't act up. I was thinking a 275/30/18?? I Have been hearing great things about Toyo R888, but also wondered about the Nittos. What size tire and brand would you guys recommend? Looking to buy shortly after getting my car back from the rear diff install. Thanks very much!!