How are your tubeless tyres coping in the heat?

timothyw

The maximum, 115psi. I am very heavy.

Still, never seen it happen with conventional clinchers on similar (and higher) pressures/rims. Given it happened within 500 miles of usage I'm inlined to suspect a manufacturing defect.

zefs

Could be that it expanded even more because of the heat. Have you tried 28c tires since you are heavier? that way you can use less psi.

timothyw

Unfortunately I don't have the clearance on my TCR for 28s.

cycleclinic

What rim and what tyre? this type of failure may be pressure related. 115psi is way too high even if your 120kg.
The problem is though many rim manufacturers are releasing rims and wheels and calling them tubeless compatible when they are anything but. The bead hooks on some are too sharp and are not pointing up. This is critical if tyre failures at the bead are to be avoided.

So it is not a manufacturing fault with the tyre but a design fault with the rim if my assumption is correct about your failure.

timothyw

To be honest, we're repeating the exact same conversation we had on another thread at this stage.

Kinlin Xr31t rims, Hutch fusion pro 5 performance TL-ready.

I can give the rim a proper looking over and see if there is a sharp point on the bead somewhere - the front tyre on a dt r460 has been fine so far, although has been run at a lower pressure.

zefs

That is why getting a good setup like Mavic is better. Passing the max psi stated on the tire does not guarantee a blow out (although not recommended obviously) since there are bigger tolerances (otherwise it would be a really common issue) but that would differ from company to company. Maybe Kinlin's is indeed as much as it states but if I remember correctly on the Mavic GCN video the tire was inflated to over 200 psi before there was a blow out. It makes sense since the research/budget of each company is different.

Wheel manufacturers should work with tire manufacturers to create similar results if they want tubeless to become mainstream on road bikes but it's hard to do when they have to release new wheels and tires each year to increase income...

luv2ride

Probably an unhelpful update but my WTB Exposures have been playing really nicely since i re-fitted them with Effetto Mariposa Caffelatex tyre sealant, rather than the Stans sealant id previously been using. Trouble is I think this also coincided with a spell of cooler weather, so unsure which has made the biggest contribution to my tyres holding pressure better!

FWIW I think it's the sealant, so if anyone is moving to tubeless and deliberating over which sealant brand to use, I'd now go with Effetto Mariposa over Stan's every time (n.b. other tyre sealant brands are available....)