Increased drag with wider tires

axmea?

It is a loaded question. Too many variables in the equation that is not mentioned. Wider, narrower, heavier, lighter, taller, shorter tires will result to change in performance. What is important to you and what is your intended purpose? Track or street? Looks or function? If it is for track, there's a spec that brings the car at its best. Suspension is just as important and part of the equation. Anything more in terms of size and weight will diminish returns. If it's for the street, it really does not matter that much. Do you really know what you gain by switching from 305 to a 295? If you have the metrics and see that the gains are significant enough for you, why not. For many, it is negligible. The car can handle it easily.

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