Ralleye rims

I apologize ahead of time if this isn't quite the right section to post this in, but does anyone make the stock ralleye rims in different sizes? I have a set of 14" rims with the big bolt pattern, but want to step up tire size and width. i really like the look I got by painting the stock rims and keeping the chrome trim, but I didn't know if they made them in 15" sizes and different widths (probably look at about 8" wide rims for 255-275 tires).