I have a set of 26" x 2.25 on my GF and the tube is 1.90-2.125. I ordered a pair of Panaracer tubes that measure 2.1-2.4. They are a little thicker and should hold up better against flats. I have not put them on yet, but wondered if they are going to be to big? What pressure am I going to able to run in these?