Brand new 30c n.exts on 303 fc. Tubeless with mucoff sealant. Disc. No issues mounting or pumping up with track pump.
Descending into a town today after about 50k, past and rear flat.
Inspect tyre which has pulled itself now into the rim bed (sealant everywhere).
No holes.
No sidewall cuta.
Cold weather so no heat buildup. Not turning, so no lateral forces, just braking.
Ram a co2 in. Inflates fine, holds air.
20k later, psst. Tyre flat in rim bed. No hole. Reinflate. Runs fine for the next 20k until I arrive.
Anyone had this before?
Rim tape is the usual culprit for me in these situations
So I've worked it out.
The bastard tyres just don't hold air. 100ml of muc off and they leak like a sieve. What happened was the rear tyre deflated enough that it slipped off the rim edge and so emptied itself.
Anyone else tried these tyres and had more luck?
I thought muc-off sealant was considered the work of the devil?
Only other time I've suffered similar was Bontrager rims that required a specific rim strip, otherwise the tyre could slip off the shoulder similar to what happened to your Corsas
Anyone else tried these tyres and had more luck?
Tempting fate, but I've been using them for a couple of months - they fitted without massive fight, inflated easily and only needed an occasional top up to start and seem to be holding pressure as well as a tube now. (stans with mavic ksyrium rims)
How greasy were the insides of the tyre?
Have found with a lot of them that the sealant doesn't actually seal all the tiny pin prick holes that you have in tubeless ready tyres. So rather than sealing, the sealant just pools and runs away from the very smallest of the holes.
So i scrub them with a scourer. Get the release agent off, lets the sealant stick properly.
Muc-Off sealant sucks. Try Stans
Noticed the other day there is a non-tubeless version.
https://www.sigmasports.com/item/Vittoria/Corsa-NEXT-Road-Tyre/ZA7N £39
https://www.sigmasports.com/item/Vittoria/Corsa-NEXT-Tubeless-Ready-Road-Tyre/ZA7S £46
Anything below 32 is useless for tubeless add in the awful corsas known for their delaminating tendencies and you have the perfect storm. Knowledge gained from working in a (what was I thinking) 95% roadie attended bike shop
No issues with muc-off though but I do prefer orangeseal or squirt with the added particles
add in the awful corsas known for their delaminating tendencies and you have the perfect storm
and Muc-Off sealant which has already been identified as the work of Satan.
The OP’s post had many alien words in it for me. ‘30c’ sounds like some sort of suboptimal knobless tyre configuration. Mix that up with a sealant known to be NBG and riding on the road it is a surprise it didn’t end in fiery death.
