Chrome stock rims addtional tire sizes?

Hey guys;

I got the Chrome Pkg rims with the P265/75R16 tire on it. I'm looking for what size tire can go on that rim for better offroad traction. I know the Adv. pkg. had the 33s on it but was that the same rim size?

http://www.tiredeals4less.com/search.cfm

315 -75- 16

yup, you can go 35x12.5 or what mark put is the metric version.