• But the recycled rear tyres have rubber memory and don't have to be trained to roll over and over again.

    So if you want to go fast from the outset get rear tyres. But if you don't mind having to pretend beinG a rear tyre and doing forward rolls to show it how it's done, then buy front ones.

    Scaring your new tyres with broken glass is discouraged as it tends to make them stiffen up with fear so they don't roll as well.

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