Fold up or wirebead for tubeless?

[Aquatic]

Which tyre would be better suited for tubeless?lets say for example between the maxxis crossmark ,foldup or wirebead?

[Procrates]

 

 

 

 

Defnately foldable, I've seen wire beads climb off during cornering or braking.

[Slow1]

Riding, racing the CrossMark wire for 2 years now. never had issues with sealant, never came off the rim, just never had any problems it.

I you do things the right way, it works for a very long time....

 

[parabola]

 

 

There's very little difference. Foldables are cheaper to ship because they, fold up, and so are generally cheaper to buy. Wire beads are slightly heavier, GENERALLY more tricky to install, but can be more sturdy under low pressures. This depends more on the manufacturer and type of tyre than the bead itself.

 

Foldables are easier to transport and take to a race with you.

 

http://mtbtires.com/TireTracks/nfblog/?p=20

 

parabola2009-11-18 19:46:23

[Troi Sport]

 

Bushmaster,

 

there are 3 things one should consider before doing your conversions.

ETRTO, EPI and pressure.

 

ETRTO - (European Tire and Rim Technical Organization): Standards organization

for tire and rim sizes. The ETRTO sizing (e.g. 37-622) means that the

tire is 37 mm wide and 622 mm diameter bead.

Basically, a well manufactured  tyre (e.g. Schwalbe) will fit best on a well manufactured rim (e.g DT Swiss)

 

EPI - Ends Per Inch (Threads per Inch): Unit for the density of the carcass

fabric. the higher the EPI, the denser ther carcass and so the higher

the quality of the tire.

A coarser thread is used in less dense carcass manufature. These tyres often battle to seal.

Schwalbe's minimum standard is 50 EPI (wire bead), other manufacturers go as low as 24 EPI

 

Pressure - the minimum infation pressure as indicated by the manufacturer.

a minimum (and maximum) pressure is usually indicated on the sidewall of the tyre. For safety reasons, this should be maintained.

Tyres that roll off rims either do not conform to ETRTO or are under inflated

 

Why is it sometimes so difficult to fit a tire?

Fitting difficulties often arise when the diameters of the rim and the tire do not match perfectly.

 

Rims

may have a tolerance in diameter of +/- 0,5 mm. In addition, the height

of the rim flank also may have a tolerance of +/- 0,5 mm. This adds up

to a complete tolerance of +/- 1,55 in the outside diameter, or of +/-

4,7 mm in the outer circumference. This corresponds to a maximum

possible circumferential difference of 9.4 mm between the largest and

the smallest rim.

 

A tire must fit on both extremes. Because a

safe fit must be ensured even on the smallest permissible rim diameter,

the proper centering of the tire on the largest permissible rim can

prove quite difficult.

 

The circumferential tolerance of

Schwalbe tires is ? 1 mm. The Marathon Plus has proven to be extremely

difficult to fit, particularly in the very narrow version. Through the

rigidity of the tire, the tire slips repeatedly from the drop-center

and it is extremely hard to pull the last piece of the tire over the

rim flange.

 

A third hand, holding the tire tight in the

drop-center on the opposite side, is very helpful here. Instead of a

?third hand?, a zip tie or an old pedal strap can help keep the tire

firmly in the drop-center during fitting.

 

 

D1 Bead Seat diameter

? 0,5 mm

 

G Rim flank height

? 0,5 mm

 

D2 Rim outer diameter,

D1 + 2 x G = ? 1,5 mm

U Rim Circumference,

D2 ? π = ? 4,71 mm

 

Shamus2009-11-18 22:04:06

[Aquatic]

On the crossmark wirebead sidewall,its written 52-559,?so its 52mm wide,and a 559mm diameter bead?and would the EPI always be mentioned?

[techguy]

Shamus has put it out there,and he has put the technical side to it, But I have run wire bead and foldables as tubeless with no issues. But I have had issues fitting various tyres (wire and fold) to different rims...

[Mudsimus]

I've used wire bead and foldable tyres, cheap and expensive, from almost every make. They all sealed perfectly. Never had any sidewall or tyre coming off issues. I think UST is overrated.

[Troi Sport]

 

On the crossmark wirebead sidewall' date='its written 52-559,?so its 52mm wide,and a 559mm diameter bead?and would the EPI always be mentioned?

 

 

[/quote']

 

52mm is the width

559mm is the diameter at the bead where it should meet the inside of the rim

EPI is usually quoted on the tag or you could reference it on the manufactureres website

 

[Troi Sport]

 

 

Shamus has put it out there' date='and he has put the technical side to it, But I have run wire bead and foldables as tubeless with no issues. But I have had issues fitting various tyres (wire and fold) to different rims...[/quote']

we have done many conversions with Wirebead and foldable Schwalbe tyres. So far no problems other than some sealants causing delaminations

Shamus2009-11-19 07:48:38

[parabola]

 

I think UST is overrated.

 

I would have to say it depends on where you ride. Down here in the cape some areas have lots of evil thorns. I used to get punctures all the time, ( I had about 12-15 last year) and since going tubeless I haven't had one. I often go ride up Tokai in the evening and have had the misfortune of puncturing as the sun goes down, not pleasant being stranded on the mountain with your back wheel in pieces and the light dimming every minute.

 

[Weight Weenie]

UST is totally out of the question for a weight weenie like me

Tubeless ready or TNT is the way to go or then the normal folding bead.

[Li Mu Bai]

 

 

first of all, dont use a Crossmark, it sucks in anything slightly damp.

 

Next, foldup is fine, wirebead can be a mission to get on and off a rim, not worth the struggle.

 

UST is bloody heavy, BUT... it is well worth it if you are worried about puncturing. non ust tires do leak air out of the sidewalls and the sidewalls do fail/tear/separate easily.

If you want peace of mind UST is good and does offer better protection against the sharp stuff you ride over.

 

Rude2009-11-19 08:08:30

[brussel]

my concern with using non-ust as tubeless is that the side walls are definitely weaker - you don't have a tube there, which as thin as it is does add some stability and strength.

 

 

 

But, I am tempted because of the light weight. Using a standard tire can save 200 grams per tire - thats quite a bit!

[Li Mu Bai]

I used Maxxis TT Larsen eXCeption series tires for a little while as tubeless, with a Joe's No Flats conversion. Super light setup.

All until I was out on a 5am midweek ride and the sidewall separated. Tear was too big for a plug/bomb, and didnt have my full camelback with spares/tubes etc.

It was a long, nervous walk home...

 

couldnt be bothered with that sort of nonsense, UST for me now, and a little longer on the toilet before I set out evens up the scales...

 

[brussel]

Rude, that is exactly my concern. You head out on a wild ride or a long race and you're left buggered when all goes south.

 

 

 

Those eXCeption series are rubbish tho. did a 3 hour ride in the cedarberg last Christmas and ripped knobs off the tires and ripped the sidewalls to pieces - and that was running tubed.