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tire diameters & calculations
My track tires:
relative to stock, I went almost 0.4" taller in front and almost 1.0" taller in rear on track tires. And stock form is for front to be taller than rear by 0.3". So by going square I am getting a lot nearer to the original intentions of stock. I have deviated pretty far from that with my much taller rear than front.
So I am leaving the staggered idea behind in the dust, and moving to all 235/40-18. Unless I made a math error. In my case, going all 245/40-18 on first attempt was an "internet mistake" where I read tire/wheel forum and thought it was the way to go. I now think all 235/40-18 is the way to go instead, based on my own actual fitment experiences. This is still a significantly taller tire than stock was.
I am talking R compound tires specifically. Street tires I am keeping exactly stock configuration.
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