I'm going to be getting new rims (10.5x18) so i can run a 315 DR but until i decide which ones to get i was wondering if anybody can recommend a better psi for my 275 BFG DR i have now? I have them at i believe 30psi give or take and they light up like a x-mass tree. I'm thinking about going to 18-20psi to see if that helps? what do you guys think?