So to add to my previous post (because I forgot a detail)...Some 29er wheelsets are disc only. I see cantilever posts on your frame, so I'm guessing there are no disc tabs (though it is possible). So, if you go with a 29er wheelset that is disc compatible, make sure the rims are rim brake compatible. As far as tires go, most mountain rims can handle a 40mm (and maybe a 35, if the rim on the wheel is narrow enough) tire, which I am guessing your frame should be able to do as well. Yes, a 40mm studded tire costs more than the cheapest 35, but not tons more. You may want to do some reading to figure out what tires you want, then determine what rim width you can use. Happy browsing!