My original set of conti tires looks like the front tires are tearing. It only happens to the front 2 tires . I rotate my tires ever oil change (or indicated by the MM). No matter which corner the tire is on, it's only these two. When my current rear tires were in the front, they don't do that. Any idea on what's going on? tire pressure is checked regularly and pumped to 32 PSI and no alignment issues. I was never off road, only on asphalt.