Wheel question

got my 8 spoke back from powdercoater but he painted the mating surface.....is this going to be a problem and why?

 

I was advised to remove any spillage to the mating surfaces. Prolly overkill but any slight differences from the hub to the rim would be amplified at the rim. A mounted spin balance would be the trick.

 

When I've had car wheels powdercoated, it was always advised to remove the powdercoating on those surfaces and the surface under the lugs nuts. The reason being is that the powdercoat crushes under the pressure of the lug nuts and regular driving. If the powdercoat crushes enough, the lug nuts could come loose.

I've followed this method on a number of sets of wheels I had powdercoated and had no problems. Although 1 set I did 6 months ago for my truck I got lazy and didn't clean the surfaces, but I kept an eye on the lug nuts and gave them a re-torque everyday. I was surprised that the lug nuts took a pretty good re-torque everyday for about a week before they set to the point where the didn't need to be retightened anymore.

 

Yeah sand it off of the mounting surface and the lug seat surface. Regular old sand paper by hand is fine, don't get too aggressive with it and mess up your pretty wheel.

 

Good question I didn't remove it from the mounting surface and have no problems, at 80lbs it ain't going any where. I was concerned where the contact is with the lug nut, but no real way of cleaning that area up unless one has that special size correct shape large dermil like stone bit. again so far all is good I'm just keeping an eye on it all.

 

Too many horror stories about powder coat on wheel/lug mounting surfaces causing failure. It will vibrate and crush over time, as long as you are retorquing and keeping an eye on things it should be fine but why risk it. Safer bet would be to sand it off, not a hard job at all. The mounting surface is more critical. The lug seat surface will sort of self clean when you put the lugs on and off.

 

I would probably go as far as wrapping some sandpaper around a block of wood just to keep a flat surface to sand with. Keep it all pretty and stuff, you know.

 

I have a really good metal flat file I used for the front disc mounting area, worked like a mini mill, I could have used that, at this time it's not worrying me.