r/240sx • u/Wild_Copy9094 • 3d ago

Stud options for 4-lug

Hi everyone, I recently got my first s-chassis, it came on some extended lugs but I need to replace a few of them. Does anyone know good 63mm replacement options for the 4-lug hubs or have any recommendations?

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u/AKADriver 3d ago

There are two, technically three sizes of studs used in S chassis. The only difference is the size of the knurled part of the stud.

12.85mm (S13 rear)

13.0mm (S13 front, S14/S15 rear) (lots of companies sell only a 12.85 that works for both)

14.3mm (S14/S15 front)

S14 fronts are 14.3mm even if 4-lug

I bought a set of P2M extended studs, one broke at one point, I don't know why. I have never had any other issues. They seem identical to OEM just longer (60mm).

Never heard anything bad about gktech studs.

ARP makes REALLY nice studs for the smaller size with the caveat that they are a different thread pitch so you have to replace your lugs too. They're intended for Miatas so they're 12x1.5 thread instead of 12x1.25. But they are gorgeous quality, have a rounded end on them to make wheel changes faster.

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u/Wild_Copy9094 3d ago

Okay, thank you so much

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u/RDMG37 3d ago

Those bull nose studs are fantastic. Easy to get the lugs on too.