How long can you let a car set before worrying about tire damage? I know if you are gonna put the car away for a year it is a good idea to take the weight off of the suspension, but what about just a few weeks or a month. Reason I ask is I went to drive my GT this morning and since the weather has cooled off I figured I should check the air in the tires. I noticed my front passenger side tire had a nasty split on the sidewall. This is on a set of BFG Radial T/A tires that have less than 7K miles on them. The car only sets for at most two weeks between being driven. I guess this could have just been a faulty tire. I am just glad I noticed it setting still before it blew out going 70 MPH on the highway.