Well, I tried running these at the track. DA was over 6000 feet. But that did not matter. I only made two runs and hung it up. 1.92 was my first 60 feet. 1.88 starting off in second was my second 60 foot. Both times spun badly, getting, on and off it, and wound up with a best 10.5 seconds. Normally I 60 feet at 5000 feet DA about 1.38 without lifting the peddle. So, I knew it was worthless after two tries and went home. They are good for the street. But not for the track.