Sizes for ARP Extended Wheel Studs

[Ian]

I'm looking to get some ARP Extended Wheel Studs for the front of the Z so that it matches the rear.


I know the thread size I need is M12 X 1.5 but I'm not sure what the Knurl sizing should be, I think its 13mm but can anyone confim?



Also does anyone know the stock thread size to save me taking a wheel off?

 

[Mr.F]

Standard thread is M12 x 1.25. Knurl is 13 x 36T. Most aftermarket studs have a bigger knurl diameter than Nissan and holes need to be relieved before fitting.
Nismo studs are supplied correct, but are expensive and quite hard to get.

 

[johnymd]

I had to re-drill mine to fit the longer studs. It's pretty easy but can't remember the hole size.

 

[Ian]

Thanks for the info, now to see if I can find some ARP studs in the correct size.

 

[Ian]

Ok, so I definitly need some extended wheel studs for the front. But I'm not sure which ones to get or where to get them.


I'd like to use ARP's if possbile in 12x1.5 so they are the same as the rear.


Can anyone help?

 

[bumblejon]

Ian,

Try these -

AIT M12 x 1.50 Mitsubishi Evolution | Rallynuts

They do cheaper versions also.

The bore in the standard 240Z hub is 12.50mm, like John mentioned, just open up the existing holes and you are in business.

 

[Ian]

Thanks for the link, I may need it but hopefully not.

I just ordered these: Late model GM M12 X 1.50 wheel stud kit - PartBox Performance and Tuning Parts

They supposedly are a direct fit, we'll see, if not I can just englarge the hole.

 

[johnymd]

Does this look like the correct spline? Then swap to 1.5 pitch nuts.

 

[jonbills]

I think ns4570 is a direct fit.
Just not available here!

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com.au/ulk/itm/123760203604