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Too many flats??(12 posts)

Too many flats??Bruce
Sep 19, 2001 8:04 PM
I have gone about 1,000 miles on my road bike (which I love). I've had 5 flats, all on the rear tire.

I check the tire when changin to a new tube (repaired one one time).

Any suggestions for getting less flats? Do people recommend those "thicker tubes" or something else?


re: Too many flats??Allen az
Sep 19, 2001 8:28 PM
I had 8 flats in June & I got really sick of it. I finally bought those thick "thorn-resistant" tubes, and I haven't had a flat since. They work! (well, for me). They do weigh a little more, But it's worth it! Slime tubes never worked for me.

my 2 cents,
Sep 19, 2001 8:39 PM
Check your rim tape. Peel off what is on there now and check the inside of your rim for any burrs or inperfections in the rim surface. Replace what you have now with Velox rim tape. Be carefull when you install a tube, make sure that it is seated properly. Inflate your tires to the maximum recommended psi on the sidewall. Under inflation can cause pinch flats. Also when you have a flat see if you can see what caused it. Feel around the inside of the tire and see what went through it. I run with ultra light tubes and seldom have flats. Each time you install a new tire, replace the rim tape. 5 flats in 1k are too many, unless you live in Reno NV. Do you know what is causing the flats?
If it's brand new, I suspect it is the rim tape, some wheels come with cheap rubber strips, which are practically worthless.
Ive had 3 flats in 2 hours before...NMChrisVedral
Sep 20, 2001 1:22 AM
Tires & Tubes ??John Evans
Sep 20, 2001 4:08 AM
I know that this horse has been beat to death but I have some questions about tires. Is it safe to assume that in buying tires you get what you pay for cheap tires are just that cheap? Is a Kevlar belted tire much more resistant to small bits of glass and metal? Are the heavier tubes, performance thorn resistant, slime, and the like worth the extra weight and money?


John Evans
re: tire suggestionsdzrider
Sep 20, 2001 4:30 AM
I have fewer flats since I've started taking the following precautions.

1. Reach down and brush both tires when I ride through sand or, God forbid, glass or metal.

2. Never allow the tube I'm mounting to touch the ground and carry something small and sharp inside the tire.

3. Go all the way around the tire and be absolutely certain that the tube doesn't show outside the bead of the tire.

4. Pump the tire to 20 lbs and look all the way around both sides to ensure that the tire is seated evenly. Most tires have a line I use to verify this.

5. Watch where I ride!
All strong suggestions, but what kind of flats?nee Spoke Wrench
Sep 20, 2001 5:51 AM
That number of flats is abnormal. Some posters on this board report riding thousands of miles between flats. Before you go crazy with super heavy tires and tubes, I would try to analyze where the flats are coming from. Actually, I do this on my own bikes after every flat.

A hole on the outside circumference of the tube is a puncture. Check the inside of your tire to be sure the thorn or piece of glass isn't still stuck in the tire.

A hole on the inside circumference of the tire is usually a rim strip problem. This is common on new bikes. Make sure your rim strip completely covers every single spoke hole. I think that the smart money will bet this is your problem.

Two parallel slits indicate an impact flat or "snake bite." My experience has been that the second flat of a ride is usually a snake bite because I didn't get enough air pressure in the tire after the first flat.

There's also a "star" in which the hole in the tube resembles a star. You'll know when you get one because you hear the blow out. Common causes are trapping the inner tube under the tire bead when you install the tire, and tires with a big enough hole in the tred to allow the tube to stick through. On the road you need to put something like a power bar wrapper or a dollar bill inside your tire to corral the inner tube.

Kevlar belted tires, Mr. Tuffys and slimed inner tubes will only work on punctures.
Exactly!Kerry Irons
Sep 20, 2001 4:44 PM
Analyze why you get flats, THEN decide how to solve it. I've had 3 flats this year, but would have been 30 at the rate of the original poster. If you don't know why you get flats, you can't resolve the problem.
re: Too many flats??Steve R
Sep 20, 2001 6:19 AM
I have had trouble with punctures after the mowers have gone over the bar ditches. We have a lot of mesquite in west texas and this can last a month or more after mowing. This year was really dry and my favorite routes didn't need mowing. I used those thorn proof tubes at one point, and they were worth it. I don't race, but for training they would probably help you if your flats are coming from road debris.
Size ??John Evans
Sep 20, 2001 7:28 AM
Let me add another question. What size should a 240lb man ride? My bike now has 700X25 but some of the tires I've looked at only come in 23 or 26, being a big guy should I step up to the 26's?
Size ??ken vining
Sep 20, 2001 8:38 AM
I hit the scales at 230. Switched from 25s to 23s this January. No problems. Dare I say it -- no flats either.
Check the valve hole...Velocipedio
Sep 20, 2001 4:33 PM
Quite often, rim tape moves slightly inside the rim, exposing the sharp edge of the valve hole. This can cause frequent flats. Simply try to move the tape back to a point where it covers the edge, or put a small piece of electrical tape over the hole and push the valve through. The tape acts like a sleeve.