I know they can repair nailed tubeless tyres with a wedged shaped rubber bung pushed from the inside out and its glued. Or perhaps a tube?
I'd have no probs with this on a tractor or 4x4 but uneasy about my RS4. Given the speed and torque this baby can put out. I'm thinking you don't know what its done to the wire/mesh internals of the tyre.
Anyone got any experience or thoughts on this?