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Radial tube in radial tire??

What are the consequences of putting a radial tube in a radial tire? Noticed today that I had a mesquite thorn sticking in my sidewall. Didn't really look too big so pulled it out and air followed!! Tires are relatively new with only about 13k miles on them. A local tire business (the big one) wants $110 to replace the 205/65R15 Kumho Solus KR21 tire. Bought these tires from Treadepot last year and did not take the road hazard warranty. What are my options? Thanks for any helpful ideas. John


  • edited April 2009
    I think the best bet is just to replace the tire. A tube (provided you can find anyone willing to mount them, and you wheels will accomodate them) is not nearly as durable as the proper tire. Since your tire will have a hole in it, that presents a serious weak spot that could potentially fail further down the road.
  • edited April 2009
    A Tube is so old school it is downright dumb. Sidewall damage usually requires a new tire, it is a safety issue, sidewall damage is the death knoll for a tire.
  • edited April 2009
    I have to agree with FoDaddy. You're better off to replace the tire itself. A cheap fix will just put you and others at risk of a blow out. If you do replace the one tire make sure you put the new tire on the back of the car, provided you have average wear on the current tires.
  • edited April 2009
    A tiny pinprick from a thorn and the tire becomes structurally unsound! Wow! How Fragile that tire is! Where does this type of thinking come from?
    There are a couple of things you could do. You could put the thorn back in, and cut off the excess. You could use a tire sealant.
    Yes, I know, you'll hear, "Horrors, a tire sealant!" And, "The tire will explode at 70 mph!" The statements are founded on what? The most rational of thought? Or, are they, "I've always assumed....."
  • edited April 2009
    You can use tubes in tubeless tires. I do that on a motorcycle with spoked wheels. However, I would never do this with a tire with a damaged sidewall. There is only one solution for sidewall damage, and that is to replace the tire.
  • edited April 2009
    I wouldn't think a mequite thorn would do too much damage to the sidewall but the trick may be finding someone to do anything about it.

    Personally, I think it would be fine with a patch and a tube. Many years ago on a cross country motorcycle trip a rear tire blew on me during an embarassing and emotionally painful escapade and stuck between a rock and a hard place, I had to install a 185 X 15" radial car tube in a 5.00 X 16" Harley Davidson motorcycle tire.
    In theory, this should have dumped me on my head within 10 miles. In practice, that tube carried me 900 miles home and stayed in there for 2 more years with no problems. (clean forgot about it.)

    (As an addendum, sprinkling talcum powder inside the tire can help when a tube is used. The talc prevents tube chaffing.)
  • edited April 2009
    Holes are stress concentrators - and since the sidewall undegoes a very complex motion - so complex patches tend not to hold - the hole become the place where the crack will start. What you want to avoid is the sudden sidewall failure at high speed. Cracks will take a while to develop, but they eventually will fail the tire. So it's best to replace the tire.

    If you want to know more about stress concentrators or crack propagation, Wikipedia does an OK job of explaining them.
  • edited April 2009
    Go to some place that does heavy truck tires. Ask them if they will do a "section repair" for you. It is done all the time. Although a section repair is still going to cost you about 40 bucks.
  • edited April 2009
    Too bad it was in the sidewall. They flex too much for a plug to hold. But for only a few bucks risk it's worth trying one.

    If it doesn't work, replace the tire. Don not use Slime or and other goo, as they'll squirt out the valve when you adjust the pressure and gum it up, and they leave so much mess that lots of shops won't work on wheels with that stuff in them.

    I doubt that anyone anywhere will not recommend against the use of a tube. It'll change the tire's handling and performance characteristics to where it may be unsafe.
  • edited April 2009
    A tiny prick is a major stress point which can lead to catastrophic tire rupture!?
    Is that because a rubber tire is so brittle?
    But, it's ok to have a have a small nail puncture in the tread area, ream it out with a 1/4 inch reamer, and force a larger plug into it? Structurally, that large hole is benign for the tire because it was make intentionally with a tool?

    Yes, I'm aware that the ARA(?) American Rubber Association advocates tire plugs.

    CapriRacer, I'd be glad to read your article on stress concentrators if you would give a more specific reference than, "in Wikipedia".
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