Just had a pint with a friend who commutes by bike every day, yet doesn't know what brand his tyres are.
Your being unrealistic expecting people to know details like that. Mine are black. I only get interested in what tyres are fitted when they need replacing, once fitted I have better things to remember.
My train of though was:
@Ramsaye started
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Just had a pint with a friend who commutes by bike every day, yet doesn't know what brand his tyres are.