All 4 rims are cracking and causing air to leak from the tires. cannon cadillac in lakeland fl., has stated these rims are a factory defect, but have denied the claim to replace all the rims with an active 2 year warranty still in effect. i only noticed this problem once i had just purchased a new tire and seen that the air pressure was low on the tire. once i took my car to the tire shop, the tire techs informed me the rims where defective, at that moment i made a appointment at cannon cadillac. the problem is still not resolved