TPVMS is mainly to assist the driver to monitor tire pressure constainly.

As for tire tread , tire crack or fetal tire deformation it requires visual inspection.

Under normal tire pressure does not mean there is no crack, no deformation, no stitching.

Normal tire pressure is just one of the important sector of tire safety, is not the only.

We still have to advocacy consumers should inspect other part of vehicle on a regular basis. 

Especially enough tread, rim deformation, loose steering, shaft distorted deformation disc brakes, brakes overheating, ball joint aging,tire cracks and tire deformation, which are all important.