The higher up the chain you go the more finicky things become and the harder it is to make performance gains. I built, owned and raced oval track cars for almost 35 years. The last cars we raced tires were $800 a set and it cost $2000 in wear and maintenance every time you pushed the starter button. And yes it needed to be fully warmed up and a skilled pilot or there was going to be big trouble. I wouldn’t trade the experience for anything but also glad to see it all go. At least this hobby you can enjoy at home and you don’t get rained out very often. 
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