Way too expensive. Not much of a selection, either. I won\'t buy a tire unless I know about its performance, like rolling resistance, puncture resistance, wear resistance, road grip, etc. That lumen worries me. What if you get a thorn in it? The tire has to be thrown out because there\'s no way to patch the lumen. How quickly will the lumen wear, considering how thin the rubber is on it? What about the stability of the tire? Tires with a center ridge were abandoned years ago because the ridge squirming made the tire unstable. Thanks, but I\'ll stick with my Schwalbes and Continentals.

they should make them for car tires, would be cheaper than the TPMS out there

Clever, but it fails the thorn test.

As the article states they are developing it for car tyres! Secondly TPMS is/will be a legal requirement in most countries and will still be fitted as the primary reason is to avoid blowouts caused by faulty tyres, and you can guess how difficult it is reverse law!

This one does pass the thorn test... http://www.treehugger.com/files/2005/12/nakano_air_hub.php

As the lumen tube is part of the ground contact patch, it will wear away as the tread wears. Slightly used tire == end of tire pumping.

Thanks much for your comments and enthusiasm! We have a list of FAQ on our Kickstarter site that gives an overview of the tires and answers common questions about the technology. You can view them here: http://www.kickstarter.com/projects/81926444/pumptire-self-inflating-bicycle-tire
If you have specific questions about the technology, ask our Engineers directly on our FB page: www.facebook.com/pumptire
Cheers!

what happens when the pump channel gets a puncture?
instantly the self pumping is useless
does the tire leak then?
can you even fix it?
can y ou still use a normal pump?
95 psi not enough for road tires thing looks heavy and delicate
anyway i don;t care i can pump a LOT of tires for $130
wle

$125 for an innertube? No thanks! I can go down to the local Walmart and get almost 50 innertubes for that price...and they have that green goop in them that automatically seals punctures. If I get the regular tubes (for my 26 in wheels) I can get almost 70 tubes for that price... Plus, with this self pumping innertube, you will have to have the tire professionally balanced. I\'m sure that with that Honkingly huge valve-stem it will throw that wheel into quite a bouncy ride!

Ed: \"$125 for an innertube? No thanks!\"
What are you talking about? That\'s the price for two tires:
\"PumpTires are intended to sell at a price of US$129.90 for a set of two City Cruisers, and $149.90 for a set of two City Pros.\"
Hopefully that also includes the associated valve mechanism. And, if they\'re good tires, that\'s a very reasonable price.
This is a fine invention. I don\'t know why people are so negative on it; the notion of a tire that tops itself up is appealing to me. I doubt the lumen will be that vulnerable and it\'s not like the tire won\'t still work if the lumen is punctured. And they say in the article that they intend to make the valve smaller. Chill out.