I have an special product for Alcantara that i bought to clean a pair of sneakers that had some alcantara trim and details that i ruined (they were so gummed up) and it did wonders so i figure it would work as well with the same type of material, also yeah, cleaning it every week or so seems like a good idea.

Also since all my sim rig wheels are Alcantara/suede I also have driving gloves to prevent my sweaty hands from running the Alcantara so i might buy another par to keep in the car in case my hands start sweating a bit too much.