zlacker

Tires deform way more than steel wheels. The cofficient of friction is just a part of the grip. You can brake with more than 0.67 g.

>>rightb+(OP)
> You can brake with more than 0.67 g.

Of course you can but we're not talking about G-forces. That's a coefficient of friction [0], a dimensionless measure. It's determined empirically literally by rubbing things together and is then used to calculate the friction force between different materials.

[0] https://en.wikipedia.org/wiki/Friction#Coefficient_of_fricti...

>>buran7+f4
I added g to give it a unit.

    mgμ = ma
    gμ = a