I'm building a bike solely for the track. I'm not looking at being super competitive but I'd like to do the best I can. The guy at my local shop hooked me up with some Conti Competitions 700x22 tubulars. I've been looking online and Conti also makes a track Pista model that comes in 19 or in 23. Why would someone prefer the wider tires? Wouldn't they have more rolling resistance? Also I'm riding outside at Hellyer and I'm a big guy (250). So what are some of the things to look for?