Originally Posted by
elcruxio
Also as it would seem, the ISO standard of tire and rim combinations prevents one getting within the 105% rule, which harms any aero claims hookless might have.
The article did mention the 105% isn't important, but I didn't see any meaningful info why that may be. Just a claim by some random person. Whereas I believe Zipp did quite a bit of research back in the day to arrive to the 105 number.
Zipp says that their 23mm IW 303s wheels are optimized for 28mm tires. Mine worked fine for two years, but I recently sold them to get rid of rim tape. Their 25mm IW rims also work with most 28mm and wider tires.
I now have 3 sets of BTLOS hookless wheels, all 25mm IW, with no rim tape needed. I'm running 28mm front and 30mm rear at the same 50-55 psi pressure.