BigPoser

I'd like to try to prevent flats and want to put some sealant in my tubes to help. The question that I have is, how much? I don't want to overload my tubes, but want the sealant to be effective. Tubes are for both 23 and 25mm tires if that helps any.

Thanks in advance.

Brandon

KDTX

I generally use 1oz. of sealant (in TUBULAR) tires 700 x 23. Stan's comes with a little measuring cup. I am a big advocate of sealant - had one tubular with a small piece of steel belted car tire wire in it. Pull out the wire and of course air started coming out, then rotated tire and the sealant plugged it up. Rode that tire for many more months.

When I finally pulled the tire, I experimented with it. I aired it up to 110 psi and took a paperclip and stabbed numerous times. After each stab, I would rotate the tire and let the sealant do it's thing. I stopped at 14 stabs. Tire still had rideable air in it the next day.

VegasTriker

Zero, none, nada. I use presta valve tubes and have had experience with other people's flats where I couldn't get the valve to take air and then close again. I ride a lot and occasionally get flats but carrying a spare tube does the trick.

ltxi

None...

TrojanHorse

Interesting. Most tubeless tires use presta valves (removeable core of course). I personally haven't had that problem but I've only had tubeless since last November.

whitemax

I've used approx. 25 ml with great success which is a bit on the low side. Never flatted yet. Just be sure to care a tube in case you do flat and you're good to go.

f4rrest

I use 1 oz of Bontrager TLR sealant in regular tubes. Works great.

There's a writeup on a popular triathlon forum that compares how well various brands seal in butyl and latex tubes. Type "bike sealant shootout" in google and it will be the first result.

HazeT

2oz of orange sealant. my experience with Stan's wasn't great. I had a cut in my tire and every time I pumped to 100+ psi it would spray sealant until pressure went back down to 60... tried many times.
Orange sealant did the job in the first time...

KonaRider125

If your going to mess with tire sealant might as well get rid of the tubes altogether and go full tubeless. Stans gear is the best. notubes.com

I switched over to tubeless about 4 months ago and have not had a single flat doing the same routes that I would get a few flats a month on. No more fixing flats on the side of the road is worth the money it costs to go tubeless IMO.

Dave Mayer

20cc pre-injected into tubulars. Makes the tires almost impregnable. I can ride the tires almost down to the cords. I assume I have a dozen or more pinprick flats by the time this occurs, but I don't notice them. You really need removable valve cores to do this.