Best tubes for 700x23c?

[martinkap]

Thank you all for your replies!

I have already answered to you once, but my reply to the thread did not show up. I am not sure why.

For tires I have Specialized PRO 'All Conditions'. Are these Kevlar? Btw, I am happy with the 23c width. Don't feel the need to go wider.

I am more curious about the tubes, the differences between them and also learning more about the 'slime'. So far, I think it is love/hate relationship. I have no idea they will slime up the pump too. I have to add air every 3rd day or so (too many bumps on high pressure tires), so that sliming up the pump might be an issue.

So, what tubes do you use or you just get whatever the nearest bike shop has?

Thanks,

Martina

[Mr. SR500]

I'm convinced flats are random. Something cuts or punctures the tire into the tube, pinch flat, or tube leaks at the valve stem. I've also seen little difference among tire brands regarding flats, most good tires perform very well. I've used:

Conti 4000
Conti 4000s
Michelin ProRace2
Vittoria Corso
Bontager RaceXLite

As for tubes, I tend to buy mostly on sale, and haven't noticed much difference. Some hold air better then others, but seems to vary tube to tube rather then across brands.