I have three sets of D hubcaps and one of the aftermarket set from Resurrected Classics. I can't get them to stop spinning on the wheels. I figured the original sets were maybe too tired, so I put on the aftermarket set, which are extremely tight, yet the rear caps spun in about 4 miles. I can get the front ones to not spin, but the rear wheels just won't stop. I've had them off at least 4 times to adjust, and I'm not a lead foot, but that shouldn't matter.

In almost 30 years of running hubcaps on 240z's, I've never experienced this.

I tried RTV, rotating the wheels, adjusting the tabs, nothing works.

Maybe the wheels are worn where the teeth grab the caps? It's a 1/71 car.

Edited Tuesday at 10:23 PM1 day by DC871F

Do they always spin opposite the direction of rotation? Like the wheel is leaving them behind? Maybe they're actually "walking" due to vibration or flexing. That might show as unexpected spin direction. I have a board in a floor that slowly opens a gap on one end after many months of traffic. Must be something about the bumps on the bottom or in the groove that ratchet it over. I kick it back in to place with my foot and it slowly works its way back open. If the caps are walking you might be able to twist the clamping portion so the teeth aren't biting. Can't remember exactly how they clamp to the rim.

I assume that you know they're spinning because the valve stems are suffering impingement.

Edited yesterday at 01:42 AM1 day by Zed Head

53 minutes ago, Zed Head said:

I assume that you know they're spinning because the valve stems are suffering impingement.

Yes. The first time this happened I didnt notice it and one of the valve stems actually split, in my garage. So I adjusted all the teeth, got them super tight, but still spin. The after market ones are super tight, it took an hour to get them all on trying not to ding them up. New tires, all balanced with no noticeable vibration in the rear. But before I adjusted them, all for corners spun. Ther are about 1 inch tabs that fully encompass the cap with serrated teeth.