Never had any issues with Vittoria tyres in the past, however when on the turbo yesterday… noticed these from the other side of the room.
Vittoria Corsa Pro Speed, 700x28. Less than 300 miles total, 18 month old.
Feel like squishy bubbles. There is no visible damage inside or out and im light, so only run these at 45-55 psi
Not sure how long they’ve been there but I was racing on these only 3 days ago 
Have another TT today, assuming these are a safety risk?
I wouldn’t ride this tire anymore, especially not at speed, closer to the limit (= race vs. ride).
I have never in my life seen this lol
I would swap it out with a known good tire and @ vittoria about it, cuz tires should not be bubbling like that
Yea thought as much.
Swapped the training rims for tonight. Set of DT Swiss R460 with gator skins lol, must be twice the weight 
Yea, odd one.
Swapped to training wheels tonight but the seller has agreed to replace the tyres as clearly a manufacturing issue.
Also offered to swap to a different tyre choice if cheaper or more expensive if I pay the difference.
Tempted to go Conti Archetype or GP5000 TTs after this issue with Vittoria
Follow up for this
Top Tip, if you are used to running deep fronts, a disc & ultra low resistance tyres, dont still bother chasing targets whilst running your Ally training wheels with commuting tyres 
Achieved highest average power of the year for a 10 mile
Finished 1min 20s behind this years PB for 10 mile on the same course 
Second follow up with this, anyone experienced issues with Conti tyres not remaining seated?
I use a very large booster to seat my tubeless and whilst both tyres were tight to fit onto the rim, they both made all the usual popping noises and appeared fully seated. However they unseat from the rim after the pressure is let out.
Inflation with the core in has proved impossible due to flow rate.
I eventually managed to get the core in and reinflate before they popped back off the bead (took 45-60 seconds to fall off after deflation) and also soaped up the tracks.
I left them overnight (to stretch?) at 80psi entirely expecting flat tyres this morning that had popped off. However ive checked today, 24hr later and they’ve lost literally not a single psi. Surprising given ive not put any sealant in.
Crossing my fingers they remain seated when I deflate later to put sealant in.
Tyres are 700x26 Aero 111 front and 700x28 GP5000 TT TR rear
Seem to behave the polar opposite to Corsa Pro Speeds
This is a replacement job. Depending on where you sre you may be able to return it as it’s not fit for purpose and has failed within an unreasonable time.
Aye the tyres were returned and exchanged without issue.
They let me jump from Vittoria Corsa Pro Speeds to Conti 111/GP5000TT-TR no problems
