Some random thoughts...
I spent a bunch of time debating if I should screw with the front and/or rear heights due to taller profiles but decided to stick with what I had. Both the rear and front are taller. With the really low front fender on the 675 I had to use may spare from the track plastics and drill it to sit about 1/4" height than stock to make sure I still had clearance for warmers. Other 675 owners have said that they actually burned holes through their OE front fenders with the 211
This seems to be a pretty unique problem to Daytonas.That aside, it's weird seeing that big ole meat on the back but it stuck well. Mine were the med/med set from NESBA. I did 2 days at Thunderbolt somewhere around mid-pack NESBA I pace - temps in the high 60's/low 70's. Tires worked fine. The rear was solid as a rock. The front was a bit vague at times but never really out of sorts.
Pretty good wear on both ends. Maybe a slight bit of hot tear on the rear as the temps crept up in the afternoon on Sunday. Took a couple PSI out and it more or less cleared up. Front did not show any issues. Ran like 31/21 off warmers. I'm guessing I have at least another day in the rear, maybe 2 if the track is not too hard on the right side of the tread and the front looks real good.
Still like the Pirelli's better but the 211's worked well at Thunderbolt.
