Got in the X today and had a low pressure warning in right rear. Stopped and found a screw in the center of the tire after less than 600 miles. Went to the gas station/shop near our house for a repair. They took the tire off and initially refused to fix the tire because there is a foam ring glued to the center of the tire. After convincing them it was for sound deadening and not structural in any way, they agreed to fix it. They cut away a section of foam to get to the rubber. But, the tar like glue keeping the foam in place is awful - thick, sticky, and hard to remove. Eventually they were able to get it clean enough to chemically bond the patch and seal the tire. Also, they didn't realize at first that the lug nuts have plastic covers over them that look like real nuts, so they couldn't find a socket that would work. Once I told them, them slipped the covers off, revealing the real smaller lug nuts underneath, and they were able to get the wheel off no problem.