Went to the gas station yesterday, seems like I'm there 3 times a week, S4's love gas stations! The plastic stem valve cover on 3 of my wheels are stuck on. Tried using a wrench to get them off and all i did was crack on of the covers. Can't figure out how to get them off. Any ideas guys?

 

I had the same problem. Finally just used a wrench, cracked them open and upgraded to these (with Audi logo)...http://www.1licenseplates.com/valvecaps.html Never had a problem since.

 

They have some similar to those at the dealer, but with the audi sport logo, I'll probably pick some of those up