My experience in my 2006 Z-51 was that MT Drag Radials took almost a second off my 1/4 mile time. Best I could do putting 428 HP to the pavement on street tires was 12.85 at 117. Could never get below 1.95 60 foot time. Changed to MT's and immediately ran a 12.02 123 and 1.72 60 foot. Ran 17 lbs in the MT's. Six speed manual.
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