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in my HUMBLE opinion, for a daily driver, you have no need for anything over 400rwhp at all. So, stick with 535s.  Those should last the lifetime of your car.it really depends on you and what you do with the car and how much resources you have. I'm building a 500rwhp capable car, but it will be daily driven at 250/300rwhp, with a max use of 400rwhp.  Anything above 400rwhp is traction issues.  Throw in some rain or a cold day, and son, your riding on the edge. 
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