Mountain Bike Tyres

[rambler]

hi folks

has anybody on here ever invested in 'armadillo' puncture proof mounatain bike tyres?

and what sort of luck have you had with them ?

ever managed to actually puncture them with big thorns etc......

[marksmith61]

Traditional tyres use an inner tube to keep them inflated but how do 'tubeless' tyres work?

Most designated tubeless tyres use Michelin and Mavic's UST (Universal Systeme Tubeless) system with a thick side-walled tyre locking into a specific sealed-bed UST rim. The advantage is an airtight seal with or without a sealant liquid inside, and very stable, pinch puncture-resistant, low pressure performance. The downsides are higher price and awkward fitting which relies on a clean rim and tyre for a good seal, plus a big-volume pump to blow it up.

Clean tyres and track pumps are distinctly rare mid ride, and even with a C02 cartridge you'll normally have to use an inner tube to get you home and repair the tyre later. While small holes are repairable, a big hole can mean the tyre is written off too.

Tubeless kits such as Stan's No Tubes allow you to create your own tubeless set-up using a latex-based liquid mix and rubber rim strip to seal the inside of a conventional tyre and rim. You still get most of the anti-pinch puncture and low pressure advantages of a UST set-up but with an almost unlimited choice of rims and tyres - or just your existing ones - with only the initial kit cost and latex top-ups to pay for. These are also lighter than UST set-ups. The same awkward on-trail repair problems apply though, and the tyres are less stable than UST models and can even roll off under big cornering loads.

Bontrager have introduced a halfway house Tubeless Ready system which uses a lightweight but mainly airtight and UST style sealed-bead tyre that can easily be fully sealed onto a tubeless rim with their latex style Super Juice. This potentially gives the best of both worlds and it's looking good so far, plus it's cheaper than full UST.

Thanks

http://www.ecigarette.org/

[Parts-King]

No tyre is puncture proof. I have used them in the past, get a big thorn in it and you might still get a puncture. I use a combo of punture proof tyres and the puncture proof tape that sits in the tyre, it seems to work and I rarely get a puncture now

Kingo

[Cyker]

That green strip stuff you can get in Halfords is pretty good :)

Helped stop my dad's road bike from getting punctures every week from all the debris on the road like it used to!

[bothwell_buyer]

Just ask parts King for a set of Run flats :lol:

[Raistlin]

Vittoria Cross XG Pro Tyre From

£27.99

Fast, flexible, and flat-free

No need for compromise in the close season: now you can run cross tyres with the same outstanding performance characteristics as your summer race tyres. Superfine casings give these cross tyres our signature silky ride, light weight for great acceleration, great puncture resistance even at low pressures, plus a competition-derived offroad tread compound.

A new tread compound, born out of MTB World Cup experience, and self-cleaning tread pattern confer maximum traction and control in mixed or on dirt tracks.

What makes a good tyre? What do riders mean by a good tyre? It rolls smoothly and quickly, rides comfortably, grips and handles well, and resists punctures. Every cyclist, from élite professional to ecominded commuter, can agree on these qualities.

These qualities depend almost entirely on how well the tyre’s casing is made. And the most important factor here is the quality of the fabric used to make the casing..

• We express this as TPI – threads per inch. The greater the TPI number, the higher the quality of the tyre. Why is this? More grip: The casing is more flexible, so more of the tyre’s surface is in contact with the Tarmac,giving better grip.

• More comfort: Fabric with a higher TPI count is thinner and more flexible, so the tyre’s casing conforms closer to the surface the tyre is being ridden on, with less shock and smoother rolling.

• Faster running: High TPI count means lower rolling resistance. Most of a tyre’s rolling resistance is caused by the rubber deforming. Because there is less rubber, tyres with a higher TPI count convert more of the rider’s energy into forward motion.

Features:

• Clincher version of the Evo XG tubular, foldable 150 TPI casing

• Supple, sweet-handling Clincher for any type of course

• Run pressures as low as 2.5 bar with no risk of snakebite

• Competition-proven tread compound and pattern

Specification:

• 150 tpi

• Usage: All conditions

• Clincher

• ETRTO: 32-622

• BAR: 4/6

• PSI: 60/90

• 50/60/50ShA

• Weight: 350g

[jirehn]

What are the advantage of a tubeless tires?

[Parts-King]

Did 15 miles at the weekend, took the tools, spare innertube, puncture outfit etc, got to within 200 meters of home, pssssst, slow puncture, managed to haul my fat rrr's the last few meters, opened the garage door, put the bike away, then realised I had not taken a pump with me oh heck, good job I didnt get a puncture 7 miles out!

Kingo