As Ross Bentley says in Speed Secrets...make the car show its weaknesses. At that point, I think its optimal to mod. I went overboard on my 330 but being more judicious with my M3. I have added camber plates and BBK to address obvious shortcomings.
Everyone, thanks for the info. Basically being a cheap skate doesn't pay here.
If I do add downforce does that wear the tires a lot faster?
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