What's the biggest?

[02Xplrin']

I have an '02 X and I want to know what is the biggest tire I can go with if I buy a set of 15x8 Eagle 589's? I've heard 30x10.5x15 but I want to know if I could go with 31x10.5x15? I want to go with the BF Goodrich Mud KMs.

 

[Alec]

Someone on here went with 32x11.50s but he had to trim his fenderwells and his speedo is way off.