I doubt 'grip' is linear to width, what you're probably hunting is more lat/long acceleration. This would require a balanced suspension set up - ie each component and spec complements eachother, not just dial in any old 'feels good' settings independently.

Tyre weight - maybe manufacturers spec sheet or a nasty approximation density x volume. Also increased rolling resistance and inertia from more weight and contact.

As said above, what are your current limits? IMO smallest footprint with good cornering ability is ideal, so "better rubber and less of it" kinda thing.


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