Tire diameter as part of overall gear ratio

[Viper488]

I know that tire diameter is part of various formulas like:

MPH =

RPM x Tire Diameter
------------------
gear ratio x 336

But just in case.. I wanted to ask if all other things being equal, does a ring & pinion ratio of say 3.45 with a talle(r) tire perform better in drag racing than a r&p ratio of 3.07 with a shorter tire?

Even if the MPH/1000 rpm with both setups is the same on paper? Or at least the MPH at 6000rpm is the same for both..(or near enough the same)

Is there some advantage in a drag race to having the 3.45 ratio doing the work? Or,does the tire diameter indeed have as much a part in it as any other item in the sequence as the formula would suggest? - Other than just contributing to MPH calculations.

 

[NormPeterson]

I think the tire distortion has about a 3% - 5% effect effect on rolling circumference or revs per mile relative to what the unloaded tire dimensions predict - this even in road tires that are not carrying any drive torque.


Norm