i recently bought a set of 19 inch hp racing hpr5's and i was wondering if any one knew of a mercedes center cap that replaces the hp one... if that doesn't exist any ideas to mod something up?

 

Try eBay there are sellers with an amazing assortment of center caps, However, if the center cap on the new wheels is bigger or smaller then the Mercedes OEM, you might have a hard time finding one with a STAR.

Also, try www.performanceparts.com and click on their MB catalog, they have some. Question is it bigger or smaller?

I bought some Lorinser center caps off eBay and they have metal prongs for adjusting the fit. you can bend them in or out. Not the wire set up you see on most caps

 

the caps on the hp's are significantly smaller than the ones on the factory wheels... and thank you im gonna try out those websites to see if i can find anything.

 

Good Luck!