I have 38's on my truck right now and my steering, braking, and power are all just fine. My question is with an open front diff. is the Dana44 going to handle 40 inch tires. I try to tell myself that that's only an inch more around the 38's, but I don't want to break anything expensive by being stupid. The only 4wheeling I get to do is deep mud and water. No rock crawling or flexing it up on the rubicon. Its southwest Missouri. Either slick sloppy mud or hard dry ground. Can anyone tell me what kind of power loss I will experience? I can smoke the 38's on dry pavement so I don't think it will hurt that bad. Any input please.