From: Burt Wagner
Sent: Thursday, October 18, 2001 3:29 PM
Why we don't ride on plugged tires
On a ride one of our chapter members noticed that one of our bikes rear
tire was low. An inspection showed a medium sized nail. The tire was
plugged and ridden home. It was then replaced with a new tire.
The picture to the right is an un-retouched digital photo of the Dunlop
Elite II tires taken from ILZ2 ACD, Earl Hobbs bike.
A close inspection of the damage shows that the plug, a mushroom style,
was 90% chewed away on the inside. The outside of the tire looked fine
around the plug. If you take a close look at the site where the nail
entered you can see where it was 'wobbling' thereby enlarging the hole
to almost 1/8" on the inside. This enlargement was not visible on the
outside of the tire.
More disturbing, if you look above the nail entry point you will see a
spot 2 3/4" x 1" where the nail was rubbing on the inside. The 'worn'
spot is about 1/4 of the way thru the SIDEWALL thickness. Again, not
visible from the outside at all.
Think about it, how would you like to be going 70mph on this tire? The
plug is insecure and the sidewall has been compromised.
That is why, if you have a plugged tire you MUST ride in the back of the
group. And it is HIGHLY recommended that you have the tire REPLACED
Until then, ride