It appear my rear tube won't hold air. I have had the bike for about a week, rode 156 miles so far. It's a brand new GIANT Defy Advanced 3.
Is losing tubes or getting slow leaks normal for a guy who is 220lbs and dropping (really 218 this morning, but I started a month ago at 228 or so)?
I considered trying to patch/change it myself, but I think I am just going to let the bike shop do it. Just want to make sure if this is something I should expect until I lose another 40-50 lbs.