Anybody and I mean anybody. The book calls for 40pis in these thing, and I found out they are a bloody skid steer tire, find for solid ground but pretty much useless on wet grass and mud. SO the question is what is anyone else keeping them pumped to, I figure knocking the tire pressure down to say 20 they would work ok, but I also dont want the darn things rolling off the rim on a hill,, Anybody have any input?