I'm not going to tell you what at they will pass and what they won't (in terms of tyres), but I've run some questionable tyres before. I imagine a lot of competitors have.
Just remember that they have to last the day...

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[COLOR="Blue"]"Your car positioning and awareness is f*ing bang on. And like, every single time.
In terms of getting that close to the bollards, Ive only been with one other person that can drive like that" –Franz[/COLOR]
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