this post was submitted on 28 Jan 2024
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NASA invented wheels that never get punctured::Would you use this type of tire?

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[–] [email protected] 7 points 11 months ago (3 children)

I don't quite get the purpose of that bike tire. Tubeless tires are basically puncture proof aswell. I'd imagine that much metal just makes it unecessarily heavy.

[–] [email protected] 4 points 11 months ago (2 children)

Tubeless tires are basically puncture proof

Where do you get that from? Vehicle tires are all tubeless, they are far from puncture proof.

[–] [email protected] 4 points 11 months ago* (last edited 11 months ago)

Tubeless bicycle tires are often used with slime as otherwise they tend to leak from the edge of the rim as the pressure isn't usually high enough to create a perfect seal. That also means they are effectively "self-healing" and puncture proof. Also tires that have this strip of goopy glue like stuff on the inside that seals all by itself are starting to get rather common as well.

[–] [email protected] 2 points 11 months ago

The tire sealant that is used inside tubeless bike tires seals small holes by itself. Driving over a nail is not going to be an issue.

[–] [email protected] 4 points 11 months ago

Puncture resistant, not puncture proof. Tubeless sets with sealant can take multiple punctures before losing too much air ans/or sealant.
Also larger punctures don't get sealed by the sealant alone, but you need to fill the hole with something like rubber plugs

Puncture proof would mean that they can't be punctured or that puncture had zero effect

[–] [email protected] 2 points 11 months ago

They keep calling it lightweight but aren’t saying what that weight is. It’s gotta be in the ballpark of a rubber tire to really be viable, so I’d say 4lbs at the absolute top end. More than that and it may reduce rolling resistance while shooting itself in the foot with the added rotational mass.