Join Date: Jun 2004
Location: Northern Nevada
The other two posts are right--Clydes will help you out, I'm sure. But just in case, here are a couple of tips...
Height won't be a problem. Look at something around 62 cm, then adjust. Possibly a 60 (I'm 6'4" and ride a 64 or 65). Google something like "bike fit" and you'll get more advice than you can use. Any bike shop can help fit you, too, but in my view if they help you for more than a few minutes, you're more or less obligated to buy from them (other people disagree on this, though).
Your weight is about the upper limit for an off-the-rack bike (i've been there, and i tacoed wheels like they were made of frosting). Wheels with 36 spokes are getting harder to find, but they stand up pretty well. I don't know anybody over about 210 pounds who can ride low-spoke count (less than 32) for very long without trouble.
Room for fat tires is pretty much necessary--you have no business on anything smaller than 32mm, and 35 or 37 would be better. I'd advise against buying anything that won't fit them.
Gearing is often overlooked, but most road bikes these days are overgeared for the average rider, and guys our size need more help than average. People will tell you you'll get used to high gearing, and eventually you might if you stick with it, but why suffer unnecessarily? A triple crank or compact double will probably suit you better than a 53-39 double.
A hybrid bike might be a better idea than a full-on road bike. You'll have lower gears, room for tires, and if you get serious, a tire swap to something faster will let you roll with the medium dogs, at least. i did my first couple of centuries, 20 years ago, on a mountain bike with road tires.
Last edited by Velo Dog; 03-03-10 at 12:10 AM.