Tear seam for air bag module

A rupturable cover (10) for an air bag module (22) comprises an inner cover (30) and an outer cover (80) overlying the inner cover. The inner cover (30) has a first tear seam (70) for enabling rupturing of the inner cover in response to inflation of an air bag (24). The outer cover (80) has a second tear seam (100) for enabling rupturing of the outer cover. The second tear seam (100) has a configuration different from the first tear seam (70). At least a portion of the second tear seam (100) overlies the first tear seam (70) when the outer cover (80) is adhered to the inner cover (30) in any one of a plurality of different positions of alignment. The second tear seam (100) may have a wavy configuration.