8 replies to this topic Post Order

[zuludog]

can someone explain these to me?

[Tarmac's Revenge]

UST - Ultimate Sidewall Technolgy (Tubeless tires need firmer sidewalls)
TUBELESS - Refers to tires that do not require tubes
TUBELESS READY - Refers to wheels and rims that are produced to accept tubeless tires without further modification or additional parts

[zuludog]

shot!!

[splat]

Mavic and Hutchinson worked together to create UST, or Universal System for Tubeless, to solve problems associated with leaving tubes behind and set standards for other rim and tire manufacturers to work towards. To be able to use the UST logo you need to comply to these standards.
Many tyre manufactureres dont or wont, but have thier own standards and call it many things LUST, TNT, Tubeless ready, 2bliss ect.

A lesson in tubeless tyre tech on Competitivecyclist.com

Edited by splat, 07 April 2011 - 10:18 .

[kosmonooit]

Unlike HD Ready (which is really only 1/2 HD)

Tubeless ready also means Rims are ready for Tubeless tyres (normally UST) but they have supplied with el-cheapo tubes, even though you can 'convert' most rims to tubeless, some are make this process easier from what I can figure.

Edited by kosmonooit, 07 April 2011 - 10:19 .

[Tubeless]

Correction

Universal System Tubeless

[Tubeless]

Also, Tubeless Ready is the "same" as UST, but for a brand to use the UST name they must pay royalties.

[rushsportscycling.com]

Lets try clear up a few things:

UST: Universal System Tubeless
[indent][/indent]This is what is commonly referred to as tubeless. UST tires and rims do not need any additional strips or sealant in order to create an air-tight seal between tire and time or to "seal" any porosity in the tire itself. This is the most hassle free way to eliminate the need for tubes, but does have some down-sides in the form of additional weight [the tires are significantly heavier due to the fact that they contain additional rubber in their casing in order to ensure their non porous qualities] and lack of selection [there are only a handful of "UST" rim's available on the market, and, although a reasonably wide tire-range still not a complete selection- this is due to the licensing costs of "UST]

Tubeless Ready: To my knowledge there aren't any rims which bare this phrase. "Tubeless Ready" refer's to tires, and specifically their bead [the area of the tire which makes contact with the rim], a "Tubeless Ready" tire is a tire which has a bead which is designed to create an airtight seal on UST rims [in my experience they don't work well with Stans rims]. Why? Well, as mentioned in my previous point one of the main down-sides to a true UST tire is the additional weight, a "Tubeless Ready" tire has a more prominent bead making for a more secure interface with the rim [this adds security to you as a rider too] without the additional material in the casing which a UST tire has in order to make it non-porous.
A "Tubeless Ready" tire has the following advantages:

• lower weight than UST
  
• more secure [tight] interface with the rim
  
• easier sealing [than non UST] due to the refined bead.

NOTE the downsides:

• "Tubeless Ready" tires are not UST!!! They will still require a sealant of sorts in order to seal the casing.
  
• Thinner [lightweight] casing's don't have the same puncture resistance as UST tires.
  
• They [in my personal experience] will not work with Stans rims

Tubeless:
This simply means a tire/ rim without a tube. This could be due to any one of the following: perma-tubes, UST, Stans converted, ghetto converted

Got it?

[Eldron]

morewoodkid, on 08 April 2011 - 08:48 , said:

Tubeless Ready: To my knowledge there aren't any rims which bare this phrase. "Tubeless Ready" refer's to tires,

A fine summation!

Here is one extra piece of advice....some wheel manufacturer's (like American Classic) refer to their wheels/rims as "tubeless ready".

What this means is that they have shaped the rim to be more tubeless friendly - they shape the inset of the rim to facilitate an easy tubeless seal - they're also a bit wider.

Beware though - they are not always tubeless - ie: the american classic rim uses a semi permanent rim strip.

The only true tubeless rim I know of is Shimano where the spokes screws into the inner wall of the rim and leaves the outer wall completely void of holes (except for the valve hole of course). The Shimano type requires no strip/ghetto/tube at all - only valve and tyre - this is the best solution in my opinion - no rim strip to complicate matters when changing tyres etc.