Help me understand something, I have never seen an air pressure rating on a rim. My minivan (as it seems with a lot of vehicles these days) as "touring" tires with a 44psi cold. I know that for ride comfort the tires should be at 35 psi per the door sticker. However, for tread life and max performance (full load of Boy Scouts and 1500 - 2000lbs of trailer & gear in tow) I want to follow the tire manufactures psi rating of 44 psi. By what I read above you are telling me that I am running about the rating for the RIM? And am at risk of damaging the rim or a bead failure? The tires were manfuctured to fit this size rim, the PSI spec on the tire is for optimual tread life and performance, how is the rim adversely effected by this higher pressure?