For me it was the other way.  I thought I'd need an XL and turned out just being L.  That helmet is a decade old and has been dropped a brazilian times, though.  Replacing it is top priority.  I've found a lot of good closeout deals on some really good helmets, and I've got some holiday pay coming for working Memorial Day (*pours one out), so I should be able to get more helmet than that bike probably requires.  I've also sized myself for a Joe Rocket Alter Ego 3.0 that I think should get me through four seasons in Texas.  I can wear a large tall or get by with an XL.  The tough one is going to be the pants.  I'm going to have to try them on before I buy.