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Thread: Tire failure

  1. #1
    Old timer craZee's Avatar
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    Default Tire failure

    Anybody know what makes a tire do this?

    Lost all pressure in the RR tire in the middle of T-1 on the Roval on Sat.

    Could not get the tire bead to reseat at the track. Once tire was removed the problem is obvious.

    Nitto NT 01. Right pressures, right temps, right rim size, 50% tread left, 1900 lb car

    tire-failure.jpg

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    Administrator ucfbrett's Avatar
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    Wow, that's odd. Can't think of anything other than defective manufacturing.

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    BMW Master bawareca's Avatar
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    Installation error maybe?

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    Señor Member b3d3g1's Avatar
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    or defective mounting
    -Anthony
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    Senior Member fatbillybob's Avatar
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    Weird! The roval does funny things to tires. I have no clue. Were you up to temp on the tires before you started going fast? A typical hot to cold range is 6-8psi around 20% of a typical running tire pressure. If you lack support at a low temp you can damage or blow a bead especially at high offset loads like on the banking. Or is there a hole somewhere else in the tire that caused you to loose pressure and then the bead gets damaged? Some people also report lots of tire movement/slip on the wheel. Do you ever monitor that or notice that by marking your tire relative to say the tire valve stem? This is seen under heavy braking mostly like T3 at ACS. Lot of tire movement would also imply potential bead issues. A solid bead protects the tire and maximizes your performance.

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    Administrator ucfbrett's Avatar
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    Quote Originally Posted by b3d3g1 View Post
    or defective mounting
    Another possibility. Maybe the tire was cut as it slid over the rim.

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    Senior Member robburgoon's Avatar
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    Looks like the installer split the bead and folded it with his spoon or the tire machine. Not enough lube perhaps? Contact Nitto and send the pic, they probably want to see it and weigh in on this.

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    Senior Member fatbillybob's Avatar
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    Corvette Forum - View Single Post - Crazy Day at Cali Speedway

    This popped up on another forum. Is this driver error or a malfunction? Did brake fault twitch the car and the driver thought if he goes straight off T3 he is going to T-bone the black car so he tries to turn in the direction of his twitch but just runs out of luck and talent?

    This is a scary looking tire that could happen to anyone. You did not say if you had any issues other than the end of your trackday. You were lucky and live to race another day if that is all that happened on track.
    Last edited by fatbillybob; 11-11-2013 at 10:38 AM.

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    Senior Member bikeindirt's Avatar
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    The story I heard while @ at the track was drive shaft fell out and lubed the rear wheels with trans fluid? Doesn't look like that in the video?

    The car looked bad on the tow truck, but that video really brings the size of the hit in to perspective... Very scary...

    BID

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    http://www.trackhq.com/Banners/yellowsitesponsor.gif emilio700's Avatar
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    Quote Originally Posted by robburgoon View Post
    Looks like the installer split the bead and folded it with his spoon or the tire machine. Not enough lube perhaps? Contact Nitto and send the pic, they probably want to see it and weigh in on this.
    +1.

    Installer error. Cut bead when mounting tire. Tire shop employee doesn't want to tell boss he just ruined a $200 race tire. On a street car, it might never be an issue. At 120mph+ on the banking..
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    JJ1
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    ^Scary. I'll be more particular about who mounts my tires.

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    Old timer craZee's Avatar
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    Quote Originally Posted by emilio700 View Post
    +1.

    Installer error. Cut bead when mounting tire. Tire shop employee doesn't want to tell boss he just ruined a $200 race tire. On a street car, it might never be an issue. At 120mph+ on the banking..
    That's kind of what I was thinking as well. This was the 3rd track day on these tires and 1-2 auto-cross days, with no prior issues. Tires and pressures were up as it was about lap 5-6 when it happened.

    Worst part is unless I pop for all new tires, I will always have 1 out of sequence now. They all normally wear very evenly.

    Thanks for the input.

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    Senior Member robburgoon's Avatar
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    Quote Originally Posted by craZee View Post
    That's kind of what I was thinking as well. This was the 3rd track day on these tires and 1-2 auto-cross days, with no prior issues. Tires and pressures were up as it was about lap 5-6 when it happened.

    Worst part is unless I pop for all new tires, I will always have 1 out of sequence now. They all normally wear very evenly.

    Thanks for the input.

    Oh boo hoo. My tires are in wildly different conditions after just an hour of counter clockwise.

    Now I'm getting ready for WSIR where my LR will vanish in a puff of smoke.

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