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Do Kysrium wheels cause flats?(12 posts)

Do Kysrium wheels cause flats?ballbite
Jun 7, 2003 4:22 AM
I keep having problems with my rear wheel either getting flats or slowly losing air. It's a new bike which I've only ridden for about 400 miles.

With my other bike, it was very rare to have this problem so I am beginning to wonder if it might be the wheels on my new bike or perhaps the tires. I have Kysriums with Hutchinson Carbon Gold tires. Are either of these products known to have problems in this area?

Other than that, I love the Kysriums.

Valve extender?filtersweep
Jun 7, 2003 4:55 AM
Make sure your extender is tight. Ks are better than average in the flat area because the innards are smooth and you don't need rim tape. You'll never get a flat from the inside. I don't want to tempt the tire gods, but my Ks have been incredible.
re: Look for this...teoteoteo
Jun 7, 2003 5:33 AM
I don't think the problem is with the Mavic's. What it sounds like is that you make have a cut in the rear tire that goes through the casing. The tube push up through the casing and every revolution of the tire it comes in contact with the pavement. The hole is very faint in many cases and it is such a slow leak that it can be frustrating. Even a small cut can do this if it goes through the casing.

I would take tire off rim and slowing look for cut spots that have gone through to the casing.
Where are the leaks?Picshooter
Jun 7, 2003 10:24 AM
Did you inspect the tube to find the leak and see where it corresponds to the tire/rim?
I don't like putting in a tube without finding the reason for the flat.
re: Do Kysrium wheels cause flats?PMC
Jun 7, 2003 12:34 PM
Check for burs around the hole for the valve stem. Other that that one area, Ks are most likely not the cause of your flats.

Check to make sure you don't have anything sharp buried in the tread/casing of the tires. I've had sharp little pieces of wire stuck through the tire casing and unless you ran you fingers along the inner tire casing, you'd have never knew it was there.

I don't have any personal experience with Hutchinson products so I cannot speak to the tires.
re: Do Kysrium wheels cause flats? YES they do!!!!!!!rogue_CT1
Jun 7, 2003 12:35 PM
Mine have caused several flats. The area around the valve stem hole somehow wears little tiny holes in the tube after a while. I matched the holes in the tube with the area on the wheel and found that the tubes were not flatting due to punctures from the tire. I solved the problem by cutting about a 3 inch section of black electrical tape then I trimmed it down so it fit flat on the rim and covered the valve stem hole. Then I pushed the stem through the tape which forced some of the tape into the hole itself.

The result- No more flats.
re: Do Kysrium wheels cause flats? YES they do!!!!!!!funknuggets
Jun 9, 2003 7:50 AM
this is funny as I am fixing a tube that has a hole right next to the valve stem as I type...

re: Do Kysrium wheels cause flats?Broomwagon
Jun 7, 2003 5:05 PM
I haven't noticed that problem yet with my K's, but, I did have that problem with a set of Mavic Open Pros. The rim tape move ever so slightly over time so I finally did what someone on this board suggested. I cut a patch from on old tube, made a very small slit and slid it over the valve stem. This served to provide a second layer protecting the new tube.

It works great.
re: Do Kysrium wheels cause flats?dave_w
Jun 7, 2003 6:03 PM
I would just swap tires front and rear (if you see nothing imbedded in the tire) to be sure. The last two bikes I bought had one of the wheels that flatted soon after and in each case I found the rim strip was skewed at some point exposing a spoke hole that would eat through the tube. If the Ksyriums have spoke hole all the way around you might want to remove the rim strip and check for burrs. The drilling can leave many rough edges and I have used light sandpaper to smooth out the edges of all the holes on some rims. Let us know what you find!
Ksyriums don't use rim tape....rogue_CT1
Jun 7, 2003 7:19 PM
That's why the small burs around the valve stem hole cause flats. Just put some electric tape over the hole.
Ksyrium rims don't use rim tape. Try this.DERICK
Jun 7, 2003 7:19 PM
Be sure to check the inside of your tire for anything poking through. Run your fingers along the inside of the tire and feel for anything sharp. ALWAYS do this when changing a flat. At least 30% of the time I'll find the cause of the flat still in the tire waiting for a fresh tube to kill. Also, whenever you mount a tire always center the tires label over the stem. This way when you find the hole in the tube you can tell where on the tire there may be damage or something still in it. If you hold the tube by the stem and the hole is in the 3:00 position then the hole in the tire will be in the 3:00 or 9:00 position with the label at 12:00.
Good idea. Thanks. (nm)newridr
Jun 8, 2003 9:14 AM