it seems the Schuberth sizes run EXACTLY to the chart.
Mine arrived and I sent it back immediately:
My size is 58-59 (L), but ordered a XL on recommendation of the Revzilla guys. Reading ttpete's experience, I am pretty sure the L will fit me perfect.
Maybe, your (guys from Revzilla) experience is different with other helmets or you are used to have a helmet that feels "looser"??
I could have made it fit with some foam, etc. but for one it would interfer with the Schuberth ventilation system and second, if I pay that money for a helmet, I certainly want it to fit perfectly....
The only time I would recommend to go up in size is when you cross over on your head size, e.g. 59 is squeezing the tape onto your head, 60 is coming loose - go for the XL.
As long as you still can slide the tape a little bit, stick with the size indicated by the Schuberth-chart....
I will stick with the Schuberth however, the helmet is awesome!
Will report back when I get the L.....