I've been doing a lot more off road riding than I expected and would really like to put a wider tire on there. I want to know what the max size is and what a good tire is before I go ahead and order one.
Ok. The 2006 Volpe I ride is fitted with Alex Ace tires. I noticed there are a number of mountain bikes for sale on the Internet with some wide tires fitted on this Alex rim, like this one http://www.bikyle.com/MtnClearance.asp (search for Alex Ace...). Seems like it could fit up to 2.1 inch if this catalog is true.
Having said that, I have been out on a number of country roads with loose gravel on the stock 32s. Seemed pretty hefty to me -- and definitely heavy enough :-(
Also, not sure you could fit fenders on a tire this wide.