Hello, I am a newby in replying to others. But I happen to have been running your size tires for 2 years now and I have did many chalk test and find 33-35PSI to be great for my jeep rubicon. Nice even wear. Now probably as yu are already aware situations change, in snow without chains I air down to no lower than 12 Psi and for rock crawling 15-18 Psi. Hope this helps.