Originally Posted by bigvegan

The Kona Hoss is sort of the Honda Civic of big guy mountain bikes, so it would be fine for him at his weight.

Does he want a mountain bike though? If he's going to be riding off road / fire trails, then yes, but if he's going to be doing mostly road / path riding with you to get in shape, he might be a lot happier with a road/touring bike, as they're a lot faster, and you don't get the pogo stick effect from the front suspension that an MTB would have (although that can be locked down).

If I were selling him a bike, I'd probably recommend a steel framed touring bike (something like this http://bikesdirect.com/products/windsor/tourist.htm), that'd be fast for the road, but would still be able to carry his weight comfortably.

Good luck!