It is not good for everyday driving on 25 lbs of air on your ZR rated tires. These tires are very expensive and with the soft compound most ZR tires are made from I would not recommend it. It is safe for the dragstrip though. I use to run 27 lbs on mine at the track and when I get home its back to 40 lbs if it is a 44 max PSI tire or 32 when it is a 35 PSI max Tire.
Tony Goon
T/S #66
13.53 @ 100.12
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