Hey,

I love the look of my Bonneville America but I'm wondering whether it is possible to get a fatter wheel and/or bigger rim in the back. I'd like to know 2 things:

What is the fattest tire size you can go with on the stock wheel?
What is the limiting factor in changing to a bigger wheel with a thinner tire?

My inspiration is the bike here: http://www.newspeedmaster.com/html/free_spirits_fenders.html but I'm wondering whether I could just get a fat wheel wheel and chop the stock rear fender at a shop. Any help is appreciated thanks.