Post by rockynv on Jun 10, 2013 3:47:39 GMT -5
The issue with tubes in a tubeless rim are as I posted above. A tubless rim is not usually machined smooth inside and may have ridges and rough spots that could cut through and puncture a tube causeing a blowout.
The tire installer needs to check out the rim for suitability and clean it up removing the ridges and polishing the rough spots down before installing the required rubber rim bands to protect the tube from direct contact with the rim. They also need to stabilize the valve stem on the tube in the larger hole that a tubeless rim has other wise the stem will wear and crack potentially causing a blowout. You also have to seal the hole around the tubes stem when you install it in a tubeless rim so water and dirt dosn't get between the tube and the rim causing a blowout.
Tubes like valve stems need to be replaced every time you replace the tire adding to the cost of tire replacement.
That said tubes are still more prone to blowouts than tubeless tires are. Tubeless tires are a great leap in safety over tube type tires.
The tire installer needs to check out the rim for suitability and clean it up removing the ridges and polishing the rough spots down before installing the required rubber rim bands to protect the tube from direct contact with the rim. They also need to stabilize the valve stem on the tube in the larger hole that a tubeless rim has other wise the stem will wear and crack potentially causing a blowout. You also have to seal the hole around the tubes stem when you install it in a tubeless rim so water and dirt dosn't get between the tube and the rim causing a blowout.
Tubes like valve stems need to be replaced every time you replace the tire adding to the cost of tire replacement.
That said tubes are still more prone to blowouts than tubeless tires are. Tubeless tires are a great leap in safety over tube type tires.
