Be wary of any construction sites you're driving past.actually did this yesterday.
woke up in the morning and was notified that my rear 2 tires were low on air..pumped them up and went to work.
after work, notified that both were very low again.
hit up discount on the way home and they found a large nail in one and a small nail and a screw in the other.
patched both up for free.
trying to figure out how only the back tires got the nails and not the front