Street tire hence the d.o.t.,dont want some short profile tire scraping the oil pan.The taller the tire the longer the roll out on the beams if I do race it.
you don't want to do much normal road driving on that narrow of a tire, you run the risk of rolling it right off the rim and it will understeer like a bast%$d
why not have a set of tires for the track and one for the street, only takes what 15 minutes to switch all 4 tires if there already on a set of rims