Getting back into racing with my Speedmerchant....

It's time for me to buy some tires & I thought the CRC's rocked but I see that they have "pro-cuts" out now. I've heard some stuff about these having a bigger rim. What is the purpose of having a big rim & how does it benefit handling/lap-times? I like the looks of the CRC dish rims a lot better than anything else out there for 1/12th (everything else just looks funky) but it's all about performance.

I question everything

=Dan