Originally Posted by smashndash

Internet rumblings say GP5000s adhere to the yet-to-be-published ETRTO TL standard, which internet rumblings state is based off of Mavic’s UST. Sorry I can’t be of more help - I’ve tried hard to find first hand sources of this information and struck out so I have no idea if either of those statements are true. It may just be better to assume they’re false.

Originally Posted by jadocs

Don't know, I do know that someone in a FB group I’m in had issues getting the tire on his Ksyrium Pro UST rims. Don’t know if he ever got them on or if it was an operator headspace and timing issue with respect to mounting.

I can tell you that I have been super happy with the Yksion Pro UST tires.