So, last night I went to the LBS and picked up my Sedona ST, brought it home and did a massive workout of a two mile ride. One of the things my son noticed was my back tire looked to be half flat. I'm sure I'd look half flat too with 390lbs pushing down me. Anyway, I checked the pressure this morning and both tires were at 45PSI. The tires that came stock on the bike are Kenda 50-559's which are rated from 40-65PSI.

I've been chatting with bautieri in PMs since yesterday and he's been a great help to me so far (seriously, thanks man!) but he thought maybe I should ask this question of the other uber clydes.

My questions are:

1) Will I risk blowing a sidewall on this tire at 65PSI at my weight. I know nothing of bike tires, but car tires can go far beyond their posted max PSI before they blow. I know of some crazy people that run car tires rated for 44 max PSI over 60 PSI. Are bike tires this way? Can I run at 65PSI without much worry of blowing the tire due to pressure?

2) Is there a better 26x1.95 tire out there for uber clydes (semi slick perferable) that can hold a higher pressure and result in less flex.

3) Any question I didn't ask here about tires, or pressure that I should have?

Thank you in advance. You've all been a tremendous help getting me started!