I went in a little bit of mud with my Car and let it sit on the tires for like 3 days because i was camping. its hard to get the brown stain off of the tires. is there a more efficient way of doing this other than pressure washing because that didnt take it all off. i want them to look brand new again.
Gasoline and a scrub brush.
if you do search on google by keyword " Cleaning tires" you can find some good videos on cleaning tires.
Please do try it, if not satisfied then please revert back.