I also checked mine routinely and monitor with TST 507 tpms. I knew they had a bad reputation beforehand and was extra diligent in keeping an eye on them. Had I not watched them like a hawk, I may not have caught the tread separation as early as I did. Luckily I got them off and replaced them with S637s before they blew and caused any damage. Like I said before, it's not a matter of if, but when.
2016 North Point 377 RLBH
2006 Ford F350 Lariat, CC, 6.0PSD, DRW, SCT tuner, air bags, bullet proofed