Why wouldn't you air down to 20psi? The standard M998 tire spec is darn close to that, so I don't see why you wouldn't.
As for removing the run flat, they aren't hurting anything by leaving them in, so why bother - they're still capable of being balanced. Having the run flat is also of benefit as it let's the tire down slowly in the event of a blowout, and it also allows you to travel to a more appropriate location to jack the vehicle so that you can safely change the tire. It's not just about being shot at.
Check this out - nobody shot at me or anything. Just traveling off a mountain to safely raise the vehicle.
View attachment 671871[/IQUOTE]I wouldn't air down below 20 psi without runflat installed... Nobody shot at you and didn't have to. If you run any tire on its side wall its going to shred like that--- run flat or not. Also if the tire BLOWS OUT, a run flat will not save the day