When I say "catch back up" I mean that by, the whole reason that you do a burn out with slicks or D/R's is because the hotter you get them the more traction they have. If a slick or D/R starts to spin it is also causing them to get hotter producing more grip, they will eventually get to the point that they are so hot that they will stop spinning and start gripping; coins the phrase "catching back up." If a regular street tire starts to spin it also causes heat, but street tires aren't made out of the same heat reactive compunds that slicks or D/R's are. So basically heat is a street tires worst enemy, the cooler you can keep them the better they will grip. Once street tires start to spin it creates excesive heat, the more heat you poor into a a street tires the less grip they have. Hope this helped to clarify things.
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2000 Mustang GT