Will these protect ceramic tiles from cracking/damage if I'm doing Olympic lifts with bumper plates? And example would be doing 225- 300 lb deadlifts.

Our 3/4" Shock Mats would be enough to protect your ceramic or porcelain tile floor from being cracked when doing heavy deadlifts. These rubber mats are very shock absorbent, and will help to deaden the impact that is created when the weight is dropped.