EcoBoost, 275/40r18 Firestone Firehawks (340tw), first time at Daytona, intermediate driver at SCCA Track Night in America event. Not the fastest, but not the slowest either; and I had a good time My fastest speed was 145.4 mph across the start/finish line which ain't too shabby for an EcoBoost. I could easily tell that a tire upgrade would have made a huge difference at the infield corners and the Bus Stop chicane.