I use RA1 on my turbo E36 M3, but I don’t think they are available in a size that fits the F90. I wanted a very sticky somewhat civilized tire that could handle rain if needed. I used to drag race them though they are too stiff to be an ideal drag tire. I did not really like driving on spongy drag radials and like my cars to perform any day not just when it has special tires, a special tune and special fuel.
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