If a motor is brand new, does the size of the commutator play a factor in the gearing, as opposed to when it is skimmed a lot but still in good shape?

The reason I ask is because I have been given a good ratio for a track, but wonder if I should take into account that the monster stock based motor i'll use is brand new and therefore the comm is of a bigger size than usual.

I doubt it is a factor,but thought I would check as ive never seen it asked before