Originally Posted by landrovermick
Spot on on a couple of points here - worked in the tyre industry, i sold many "string / plug" repair kits, - they are intended only for emergency use - i have had a blow out on a tyre fitted with one.
The only permanent repair for a punctured tyre which is covered by "most" tyre companies is the one described in the quote above - approved by the RTA etc. the up side of this repair is that the tyre is removed from the rim and inspected prior to repair. the inner butyl rubber line of the tyre isalso sealed after the mushroom is inserted, this rendering the tyre less likely to be suseptible to seperation due to air / moisture / rust in the belts.
Mick