There has been a good bit of "expert" advice leaning toward heavy'er riders lowering the PSI a bit. I'm 210 at 6'1'' and a couple of years ago quit using 120 PSI in 23's lowering it to 100, seems to give a more comfortable less compliant ride, hell I'm not racing so it works for me. If you want to know more of what the so called experts at roadbikerider.com say about the subject you got to give them money for a subscription to their site, no thanks the guy at my LBS knows just a much as "uncle al" at RBR and he will share it for free. However if I wanted advice on doing a 200K brevet I may want to pay for it from Ed Pavelka who is a legend at those types of events..........................

Here an excerpt from their free news letter

Thirty-six hours later, Ed was riding a 200-km brevet around Massanutten Mountain in northwest Virginia, and things were not going well. The climbs were relentless. A headwind was gusting to 20 mph. His pace felt rhythmless. He was overdressed and getting damp as daybreak's 28F degrees rose toward 68. He was low on fluids and beginning to ration his remaining sips. Twice, half-eaten energy bars fell from his jacket pocket and disappeared into the roadside vegetation. That made him worry about having enough food as well as enough to drink. In short, the ride was falling apart. And there were still 75 miles to go.

Exciting aint it...............


http://roadbikerider.com/