First off, I fully recognize that “brown” tires are a normal condition that does not need to be resolved.
These tires were installed two months ago. This “browning issue” appeared immediately after I cleaned the tires and wheels using a non-acid wheel cleaner. Prior to this, the tires had a perfectly normal appearance. I have never experienced this “browning issue” with other Michelin tires, but also, this is the first Michelin light-truck tire I have owned.
What happened?