Leah, you stated " Islabikes, but they are spendy and I can find almost no info about them online." Link below is to their Size Guide, which gives minimum and maximum PBH for their models. Seems fairly comprehensive.
http://www.islabikes.com/size-guide/ Measuring PBH could be tricky. Could make a game of it, like measuring yours and having him put the tape measure on the floor and freeze it with the thumblock. Then measure his. Sounds like the TT is too long. Jan H had it easy, his daughters used 26" wheels and better tires are available, in his case Compass, but 26" Panaracer Paselas are out there. Not sure on small sizes. John Hawrylak Woodstown NJ -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.