Rear Flat, Plug or?

Discussion in 'General Harley Davidson Topic' started by Stevecracker, Jun 24, 2016.

  1. Stevecracker

    Stevecracker Member

    Hi All,
    Just pulled a cut nail out of the rear tire stock FXDC '13
    Small masonry nail, about 3/32" square.
    I went and bought a tube today but got in a hurry and plugged the small hole, The hole is about 2" off center in the rear.
    I would like some opinions about safety


  2. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

    Personally I would use a plug as a get me home emergency repair and either fit a tube or replace the tyre
    Only 2 tyres on a bike pretty scary to have a tyre fail at 70 mph

    Jack Klarich and HDDon like this.
  3. HDDon

    HDDon Experienced Member Contributor Retired Moderators

    I have to go with Brian here. If a plug will get me home that is as far as I will trust it. Back in the late '70's I had a rear go flat on a wet road at about 65mph. Needless to say it is not something I want to do again anytime soon. I know there are a couple of tire manuf. that say you can plug their tires if you use the mushroom type plug, but I just can't do it.
    Jack Klarich likes this.
  4. Jack Klarich

    Jack Klarich Expert Member

    Most motorcycle tyre manufacturers do not recommend plugging a tire, that said it is a safety concern. As Don stated we have done it to get home, and yes the ( mushroom) plug patch if done correctly on MOST tires can be a permanent repair, It is your ride you decide
    From Dunlop Web Page
    Some punctures in motorcycle tyres may be repaired. Dunlop recommends only permanent patch/plug repairs of small (maximum 1/4-inch diameter) tread area punctures from within the dismounted tyre by a qualified tyre repair shop or motorcycle dealer. Never perform an exterior repair and never use an inner tube as a substitute for a proper repair.

    Speed should not exceed 80kph (50mph) for the first 24 hours after repair, and the repaired tyre should never be used at speeds higher than 120kph (75mph). Check inflation pressure after tyre cools for at least three hours following run-in, or sooner if air loss is suspected.

    No form of temporary repair should be attempted because secondary damage caused by a penetrating object may not be detected and tyre or tube deflation may occur at a later date.

    Dunlop does not recommend the use of liquid sealants. These are a form of temporary repair, and may adversely affect ply material and mask secondary damage caused by a penetrating object.
    Reliance upon sealants can result in sudden tyre failure and accident.

    Dunlop recommends only permanent repairs performed from the inside of the tyre, using a combination patch/plug method. Never attempt a repair from the outside, or inject a sealant, or simply use an inner tube, patch or plug as a substitute for a proper repair.

    Only a qualified tyre repair shop or motorcycle tyre dealer should perform repairs. Inspection of the tyre and adequacy of repair becomes the responsibility of the person actually performing the repair and Dunlop does not warrant the results of a repair in any way.

    Before any repair is attempted, a tyre must be removed from the wheel and thoroughly inspected. The following are minimum guidelines for the repairer. Tyres should not be repaired if any of the following conditions exist:

    • a tyre has been previously injected with a sealant/balancer

    • the puncture is larger than 6mm (1/4-inch) in diameter

    • the puncture is not perpendicular to the carcass

    • the puncture is in the tyre sidewall

    • separation of plies, tread separation, separation of any other components

    • cut or broken ply cords

    • broken or damaged bead wires

    • cut or damaged chafers (bead area)

    • deterioration of the carcass inside the tyre due to “run flat” or under-inflation

    • cracks or other damage to the integrity of the inner liner * excessive wear – tyre should have at least 1/32 of an inch of tread depth, excluding tread wear indicators

    • cracks in sidewall or tread

    • impact breaks, cuts, snags or gouges that penetrate the surface
    Please note:

    • There should be no more than one repair per tyre

    • The wheel itself must be in good condition. A cracked or bent wheel may lead to loss of air and cause subsequent deflation of the tyre

    • Following repair, the valve assembly should be replaced and the tyre/wheel rebalanced

    • Speed should not exceed 80kph (50mph) for the first 24 hours after tyre repair and the repaired tyre should never be used at speeds higher than 120kph (75mph)

    • The repairer is solely responsible for instructing the motorcyclist as to the restrictions to be placed on tyre use following repair. In summary, no form of temporary repair should be attempted. Motorcycle tyre repairs leave no room for error and any doubt as to inspection or adequacy of repair should be resolved by discarding the tyre
    Be sure to consult our Motorcycle Tyre Limited Warranty, Care and Maintenance brochure for additional information regarding the use of Dunlop tyres. Seek a qualified motorcycle tyre repair centre for more details. Never attempt to repair a damaged tyre without the assistance of an experienced tyre mechanic.
    Last edited: Jun 24, 2016
  5. dbmg

    dbmg Experienced Member

    You only have 2 tires on the road. In a emergency I would use a plug to get me home or nearest shop then replace tire or tires. The odds are with you in the fact that in 30+ years of riding I have had to only replace 3 rear tires from picking up debris 2 on the same bike. So I do not see a reason to run on a repaired tire. Though there will be those who disagree and that is fine for it is their bike and not mine.........:D
  6. Jeff Klarich

    Jeff Klarich Well-Known Member Contributor

    I have to agree with the above posts, the price of a new tire is cheap compared to picking up your face off the pavement.
  7. rusntx

    rusntx Active Member Contributor

    No or tire are the only options.
  8. Stevecracker

    Stevecracker Member

    Thanks for all the sound advice. New tire should be in Weds.
    Got a Michelin commander from JP for $170.00I will do a little scooting around until then
    gator508 and HDDon like this.
  9. Stevecracker

    Stevecracker Member

    What is up with the valve stem? I went about 5 miles to costco today and aired up correctly, went and ate a bucket of frozen yogurt and noticed tire going flat. Went back to the tire dept and it was leaking from the valve stem. Same thing happened last flat I got. I tightened the stem some aired up and raced home, will be parked until the tire comes in. I did not run it flat, can't understand why the valve stem leaks!
  10. dbmg

    dbmg Experienced Member

    My thought is that possibly tube was pinched and now loosing air and the only place for the air to go is leak around valve stem......