Bubble in Tyre

I have had this same problem with two LUST Crossmarks. I reckon it must have something to do with the sealant. I only use Stans and I have noticed the problem occurs after about 6 months of not having checked and replaced the sealant. I now change my sealant every few months and this has stopped the problem. I am pretty certain that the problem is irreparable and recommend you ditch the tyre ASAP. Yep, gave me the sh!ts too......twice!

Actually, it's nothing to do with sealant. I've had a crossmark LUST bubble VERY badly (ie one large and several small to med bubbles all round the tyre), and I don't run sealant in them (yeah it's a risk, but I hate the gunk in there).

Again still held preasure, but no way was I going to ride with it like that, so threw a new one in.

It's something to do with the how maxxis are sealing them themselves. theres some kind of weekness in the inner surface of the tyre that on a UST is supposed to sealed, and the air preasure works at it and eventually starts to delaminate the tyre from the inside (getting betten the inner sealing surface and the outer, softer compound of the tread surface). The sealant has no impact on this, as it's still sealed from the outside air, as it's just a weekness in the casing causing it to stretch in that point without actually opening to the outside enviroment (probably find that the sealant ends up filling up the inside of the bubble, but that's not exactly any help).

I had a front Ignitor do exactly the same thing in 3 different spots. One of them was the size of a 50cent piece.

I like you thought it was air trapped in there and that I might have a terriable blow out.

I thought I would need a new tyre anyway so I pierced the bubble with a small nail and all that came out was water!
No air at all and the tyre stayed inflated! I actually rode it for another 3-4months before replacing it!

The posts here confirm that Maxxis tyres(crossmarks in particular)seems to 'bubble' on a regular basis. I too had a lust c/mark bubble on me so out she went pronto. Maybe all manufacturers are so hung up on tyre weights, optimum rolling resistance etc that they are putting less and less rubber in the carcass which can only lead to structural problems especially given our trails are so rocky and skatey (excessive heat may build up in weak spots in the tyre too if you're heavy on the brakes).

Best way to affect a brand is to boycott it....there's lots of good tyre makers out there - kenda, wtb, continentals (to list just a few) all of which have tyres that work really well on our trails, so give them a go.

I had the same problem as you Z& the guy at the shop said it was the way it was put on , I showed him the wheel was true marked the spot on the rim then he took it of & the tyre was out in a different position on the rim .That is when I got a replacement tyre & it happened a few months later on the other rim & both tyres had tubes in them ?

Weird- I got a bubble in my Maxxis Crossmark only yesterday. Just went out and popped it with a pin and just a small bit of air came out, the tyre is still holding pressure fine. If it's still got pressure in the morning then I'll chance it and use it at the Crits tomorrow night. Am also running stans.
Cheers Chad

I took a rear Crossmark off my Anthem with a similar problem about 6 months ago. Bike Addiction were interested in seeing it, and sending it back to Maxxis to inspect. BA gave me a new tyre for free, plus the installation while U wait + free too. Those guys are great for abike shop. Although it helps that I bought that bike there, and they know me. Still, I would try that with your fav LBS. See how you go.

apparently thats what its called.the different layers seperate and form the bubble.i had it happen to both my crossmarks(many small bubbles) and to a highroller, which blew seconds before hitting up the old yella brick rd ns drop, cost me a 3 hr walk back to the car, that sucka blew up to the size of a half tennis ball then boom, whilst i was approaching the drop.i also had a nevegal blow up at 2am in the spare room .all of these tyres were tubless with stans, shit happens

Im a continental man myself mountain king up front and a race king rear ive use UST or with tubes never had a problem.

I've literally just fitted 2 new LUST Crossmarks on Wednesday night, and now I'm reading this thread. I'm going to race home and check the tyres for bubbles now!! They've been sitting in the garage at 36psi since the other night, so hopefully this isn't too high to cause bubbles. Typically will run them in the mid to high 20's out on Langford park circuit.

BTW, is this happening across different sizes, or is it one size in particular? That doesn't seem to be something that has been mentioned above.

Crossed fingers for Anaconda this weekend though!!!

Just went to inflate my tires after them sitting for the winter and found 5 of those bubbles in my Maxxis Ignitor. Its less then a year old and never had sealant. Maxxis FAIL. They look same as your photo.

you sometimes get that sort of delamination on car tyres too. I have had many mnay flats over the years, and only one resulted in a crash - i'd ride them, but not 25km from the nearest road, given it may not be a rapairable situation.

L.U.S.T.......Lightweight usless shit tyres

I've had this happen twice.

Both times i've had them exchanged free of charge. The second time they tried to insinuate it was because I used Stans.

Just be firm, mention they are "not fit for use" and you should get it exchanged.