| Could it be that the tyres are oxidised, Old stock maybe? You have to be careful with wheel cleaners. Those oxalic acid ones I despise, I don't know about what EO has in it. For quite some time I have been using a couple of professional wash and wax shampoo's on the wheels and tires of my car and that helps to keep the wax level topped up, making the alloys really gleamy but It also prevents browning. I follow with non silicone tyre rejuvinators but of course if it rains, they won't last long but the tyres still won't go brown. If the problem continues, talk to the shop that sold you the tires
I'm looking forward to getting Dinitrol tyre rejuvinator which repairs oxidised tires.
That really sucks, brown tires are so grose |