We see this type of corrosion regularly and it can cause a slow leak. You can see the comparison where our Technician cleaned and buffed the area and where the corrosion is. Abrasive elements may intrude between the tire and wheel at the bead seat area. Due to relative motion between the tire and wheel, this motion may cause abrasive particles to wear the wheel surface. As the wear continues, corrosive media from the environment may cause corrosion of the wheel bead seat, resulting in tire pressure loss.
With the TPMS warning light, you can catch the problem before the tire becomes completely flat.
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