Written on: 15/10/2012 by dexcz (2 reviews written)
I've used this product a few times now. It works just fine and I got the tyre permanently repaired afterwards every time.
You just have to read the instructions, NOT jack the car up and drive for a few miles ASAP. The friction of the tyre and the road warms the stuff up and gives you more pressure aswell.
Some repairers (e.g. Kwik Fit) tell people that this product ruins tyres and that they have to buy a new one.
According to Holts, this is not true and Tyreweld is just water based "liquid rubber" so can't damage anything.
It's just a lot easier and more profitable for them to sell you a new tyre rather than having to remove the white stuff and repair the old one.