klutchdust wrote:
In the early days working at a gas station we used rubber plugs, then they came out with a mushroom plug you put in a device that inserted it into the tire. Kind of like what they use today with the exception of dismounting the tire and installing it from the inside.
The rag type came into play and shown good results. For every story there will be someone that had a failure, my guess is the successful plug repair outnumbers the failures. HAven't seen any accident reports with the headlines "plugged tire grenades and kills many..."
So...for those old schoolers that grew up scraping' and savin' and doing whatever it took continue with what you know works. for the others.....
... saying a driver would be fired on the spot caught with a tire plug kit..:R
Those old rubber plugs (that looked more like a rivet) were nothing like what tires are repaired with today. There was nothing holding them in place other than air pressure on the inside and also nothing to actually keep air from migrating into the tire's cord body and cause separations. Today's "Plug Patch" Combination units have the pre-cured rubber coated with a chemical vulcanized compound that hot only holds the patch unit in place but forms a barrier to air attempting to infiltrate the cord body.
Tire manufacturers and tire chains that offered warranties started to exclude any tire repaired with a plug from warranty consideration. All based on testing by the tire industry's association testing and data gathering.
Ever since the Firestone 500/Ford Explorer fiasco tire companies became far more risk averse than they were prior to that.
As for firing a driver because they carry a plug kit, the story related is a perfect example of why. Rather than waiting for a proper repair, the driver decided he knew better and ended up destroying a tire that could cost the owner up to $600 or more.