i had my brakes done 2 weeks ago by my friend. he owns a shop and he did em for free. so 2 weeks of driving were great i had no problems, then yesterday while driving i heard a wierd sound....like a rubbing sound and it alos sounded like something was lose, so i checked it out nad everything seemed to be fine. then today on my way to lunch i heard something wierd and i saw a bolt in my side fall off as i was driving, i was like "'Kiss Me''Kiss Me''Kiss Me''Kiss Me'!!!!!" so i parked it and looked at my exhaust cuz that is what i thought it was, soafter lunch i decieded to take my car home and go out with my friend in his car....well i am pulling up my driveway and i hear "crrrrrrraaack" i looked underneath and my exhaust was still in my place, then my tire was deflating...i got out and looked at the inside of the rim and saw that is cracked! the bolt that i saw fly off was my caliper bolt! and the other one was lying in my driveway, my friend who put them on said he doesn't know how that happened...he put those bolts on with an airgun. he said someone might be messin with me, i think that i know who...but can someone losen caliper bolts that are air gun tight with out takin the rims off? i had wheels locks on so i know they ddin't take off the rim, but is that possible that they can come off like that? i am soo pissed.i just bought new rims too, my black cobra r's that are not someone goin to have to get fixed. please any feedback is welcome...