Originally Posted by
Overdraft
well I can tell you my least favourite tubeless tires…. Pirelli P Zero Race TLR…
to be fair, this is a sample of 1. I got these to replace my tube setup but they only retain about 40psi after 24 hours.
i sort of expected that tubeless would either work, or not work. instead these things pump up to whatever you want… 60, 80, whatever… no hiss no fuss… next day? down to 45. a week later? still 45. I don’t get it.
It's almost certainly not the tires. If they've been on the wheels long enough for the sealant to go to work on any small leaks, I would suspect either the tape job or the valve/stem.