èchale pelotas....

pues eso que ni càmara , ni tubeless...
le metes unas pelotas al neumàtico (unas 30) y asì si pinchas, pinchas una y las otras se corren y ocupan el hueco...
cada 2 meses se abre y se reemplazan las pinchadas,,,

http://www.foromtb.com/showthread.php?t=223952

http://www.tireballs.com/index.html

http://www.tireballs.com/flash/cycleinstallation.html

El peso es de 1.080 grs. para la rueda trasera de moto(36 bolas a 30 grs.) y 750 grs. para la delantera de moto(50 bolas a 15 grs.)

Lo peor: El precio; 279€ el kit. Incluye las bolas, el lubricante, la aguja para hinchado y el protector contra la llanta.
http://www.endureros.com/postlite10565-tire.html+balls
ventajas (en inglès) frente a la espuma

Tire Ball advantages over foam inserts

* Less Weight
Tire Balls are lighter than most tubes. Foam inserts add significant unsprung weight, hurting suspension compliance.
* Less Hassle
Tire Balls can be left in the tire between rides or races. Foam inserts must be removed to avoid "compression" of the foam.
* Adjustable Pressures
Tire Ball quantities and pressures can be varied to suit conditions. Foam inserts have no adjustability.
* No Re-Lubing necessary
Tire Balls are lubricated upon installation in the tire. Foam inserts must be re-greased regularly to avoid friction wear and melting.
* Better Traction
Low pressures gives better grip without worrying about flats.
* Durability
Tire Balls last for years. Foam inserts are replaced as they compress and wear out.
* Price
If you are buying 2 sets of foam inserts per year, Tire Balls will save you money!
* 1 year Warranty
Tire Balls have a 1 year unconditional warranty!

saludos ceci