They can be used tubeless and with tube. I use mine tubeless on a split rim and this way it is a breeze fixing them. You never have to dismount the rim only the tire. I have 14.00r20 I don't know if this is possible for a car. Small punctures are easy fixed with a system from rema sealfix I beleve. You just put a pug with vulcanising stuff in the hole and it is fixed! and for the bigger repairs you split the rim and take te tire off. This takes max. 15min. and put a outside tire patch in and mount the tire again. Be carefull tough never stand in front of the ring when putting air in. If the ring is not fixed properly it can burst off at any given pressure and you wouldn't be the first to get injured or killed by it!
gr.
Henk Jan
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