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Old 04-04-2015, 04:59 PM   #34093
ragzl1
JOHN
 
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Drives: 13 ZL1, 69 RS, 19 Z06, 1957 Vette
Join Date: Nov 2012
Location: ILLINOIS
Posts: 430
Rick -- The Goodyear Eagle F1's on the ZL1 will thump for a couple of miles. They even do it a little in the summer when it has sat for 3 to 4 weeks. I usually take it pretty easy until the oil temp has come up. 20 MPH for the first half mile and then 45 MPH for the next mile and a half. The air pressure will usually come up a pound and the thumping has stopped in that amount of time. Then it is go time.

John
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