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-   -   Longer ARP wheel studs on front? (https://www.rx8club.com/rx-8-racing-25/longer-arp-wheel-studs-front-268045/)

Mr. Pockets 07-11-2018 11:00 AM

Longer ARP wheel studs on front?
Hey everybody,

I ordered 3.25" ARP wheel studs from Mazdaspeed awhile ago. They're ARP PN 100-7713. Has anybody installed them on the front hubs? The splines don't match, and Mazdaspeed's answer is, 'yeah, just jam 'em in there.' They claim the studs are designed to just push their way in there.

That makes me a little nervous. I like stuff to fit together nicely and not require hydraulic pressure to force their way in.

John V 07-11-2018 12:54 PM

I've always used a hydraulic press to push in wheel studs, including the long ARPs on both ends of my RX-8. :dunno:

roflcopter 07-11-2018 05:20 PM

Yeah... wheel studs typically need to be pressed in, and out.

GeicoGecko 07-11-2018 06:47 PM

Agreed, on any car I've ever worked on you have to press in/out the wheel studs. Can be intimidating at first but once you do it a few times it's easy. HarborFreight has a great press that comes in handy for everything from wheel studs, bushings, wheel bearings oh and making a tombstone for a Miata :) (turns out the base platform width is identical to the tombstone mounting width!)

Mr. Pockets 07-11-2018 08:23 PM

Thank you for your responses. I'm well aware that studs are pressed in.

What concerns me is that the splines on the studs don't match the splines in the holes on the hubs. To me it's like cross-threading a nut on purpose.

roflcopter 07-11-2018 09:23 PM

If they had the same splines as the old ones then the press fit wouldn't be very tight because the hole is already expanded a bit to fit the previous ones. I wouldn't worry about the splines being different.

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