Wheel Rim problems of the 1998 Chevrolet Malibu

Aluminum alloy tire rims: I own a 1998 Chevrolet Malibu, and the problem is with the rims. I am on my third purchased replacement rim for the vehicle. The problem is that when the tire goes through a chuck or pot hole in the road they are cracking, causing deflation of the tire. I feel that this is a problem since the dealership where I purchased the vehicle tells me that they have been replacing alot of these rims.

Left front wheel rim cracked resulting in very slow air leak. Yh.