gogoevo

In preparation to have my wheels refinished, I first had them sandblasted. After clearly stating that the conical area on the wheel, where the CL nut meets the wheel, is off-limits and cannot be touched, what do they do? They sandblasted that area! It now has a slightly rough feel, whereas before, it was polished.

How big of a problem do I have here? Am I looking at new wheels?

Your comments and advice are welcome.

Thank you!

GrantG

Yikes - that's annoying when they don't listen. I am not sure - I suppose that area could be re-polished (but might change dimensions) - it would have to be done very well. I might give a call to BBS (OEM supplier to Porsche) and see if you can talk to someone with knowledge.

redmonkey928

Oops - would not have had sandblasted in the first place. If it were me, I would just replace and walk away from the time it will take to sort out and still question if right at the end of the day.

tgibrit

sorry to hear that, don't think anyone (Porsche, dealership or BBS) will tell you anything other that get new wheels - its the only zero liability answer. but I I would have a tough time just throwing them out. good luck in your research, I would want to know they are safe before using - we all push these cars unless this is just a C&C car.

big greasy taco

wow, thats terrible. Always been my fear in getting these wheels refinished. Curious to know how this turns out for you

ipse dixit

Ouch, sorry to hear.

Personally, I would get new wheels.

But that's just me.

JGC

If all else fails, you could get a wheel nut that will basically be scrapped and some grinding paste and bring them back to a smooth finish by hand lapping. It will be tedious, cost you a wheel nut, but will work. The dimensional change from the material you remove will be negligible. Good luck!

gogoevo

Thanks for the comments! As noted above, I'm having a hard time just throwing these out. I would like to think it would be safe to continue using these wheels for a mostly street-driven car, and perhaps an AutoX here and there. Moreover, the amount of Optimoly paste applied between the CL nut and the wheel's hub - do the two surfaces even touch? Perhaps a silly question, I'm no engineer.

I will attach a picture once I get the wheels back.

I did find this per the owner's manual: "All contact surfaces on the wheel, wheel hub and brake disk as well as the thread in the wheel hub must be free of abrasion, sand, dust or shavings."

Thanks!

amsmike

Supreme Power may know, they are a large BBS dealer along with lots of knowledge on Porsche's.

gogoevo

**** poor job on the coating, too.

38D

this

rcg412

They won’t compress and will chatter from the micro abrasions.

sorry!

gogoevo

Curious. Can you elaborate please?

TPG

Can you polish the centers?

jbatchelor

I think I'd do a bit of gentle lappng-in and then start to use them with periodic checks of tightening torque. We all know what a pain it is to check CL torques but I'd run them for 25 miles, then 50, then 100, then 500 (and so on) checking at each interval for evidence of loss of clamping torque. Maybe become more aggressive with the driving pattern, too.

With luck you will find that that the original torque is retained - happy days. If torque is lost with mileage or with drive cycle duty then you know you have no alternative than to replace.

James