what make a tire bulge?

@bjskid (322)
United States
February 4, 2007 2:46pm CST
the tire is only a month old. i had a blow out a month ago, so I replaced the tire. I asked the service place to check the rim and and they said it was fine. I do not recall hitting a pothole or a curb with the new tire, however, i took it to pep boys and they said the rim was cracked.
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