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      08-05-2020, 12:55 PM   #375
M5Rick
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Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: Southern England

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No wonder the sidewalls don't collapse onto the rims with a puncture, had a close look at Bottas's puncture and there are flat steel? channels on the inside of the tyre going from rim end to where tread begins and the sidewall is GLUED onto the rim.The inside of tyre seems to be filled with cords and channels going across the tyre.
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