There’s a lot of useful info on the MTB Tires*[/url] site.
I think once you’ve tried the big fat 3.7″ Larrys on a 80mm rim, all your other tyres seem much too narrow.
Hence the reason I’m getting wider rims for my 29er – to make my RRs even fatter 🙂
*btw, there’s a really good article on the use of dropbars offroad.cynic-al – Member
Edit:
Am wondering if my unbuilt 50mm rim should get swapped out for a 70, someone linked to some cheap wide rims from Germany.
That would be me – I’ve had 3 sets of wide rims of them so far, 2×100 and 5×80. Got a few wheels to build yet 🙂
The thing about the extra flotation on the fatwheels is you don’t really notice it that much unless you have a reference to something else, eg you have ridden it on an ordinary tyre or have someone with you on an ordinary bike. From your perspective on the fatbike you’re just riding over stuff.
They’re not just for snow – they’re great on climbs on loose surfaces and also on those knobbly rocky stretches.