Before i start, i have a 350z.
I need to run mustang rims until i get a new set of 19" rims. i don't know when..
Is it OK to use 350z stock lugnuts on mustang rims? These rims don't have dimple shape where lugnuts make contact.

 

What do you mean by dimple shape?

If the wheels accept an acorn style lug nut and thats what you have, they will work.

 

The rims don't have the acorn shape. It's just flat.
But the stock lugnuts are acorn shaped.

 

Then you would need new lug nuts to match the wheels mounting style.

 

Is it not safe to run acorn style nuts on flat rims? The wheels seem to be tight against the rotor hat

 

the contact surface is going to be mininal

got this from a website:

Warning
Never use a conical seat lug nut/bolt on a mag or shank type lug seat and never use a mag or shank type lug nut/bolt on a conical seat. The two are not compatible and if installed incorrectly, the lug nuts may lose torque, possibly resulting in wheel loss or contributing to damage or injury. In addition, spherical or ball seat lug nuts/bolt must be used with spherical or ball seats. ONLY USE THE TYPE OF LUG NUT/BOLT COMPATIBLE WITH THE TYPE OF LUG SEAT.

 

What type of lug seat do the oem 19s have??

 

Tapered acorn style.

 

Can I use a lugnut like this?? I'm hearing conflicting things..

 

Yes, its the seat that you are concerened with as far as holding the wheel to the hub properly. The base of those are tapered to fit the wheels.

 

don't some lug nuts have different size of acorn seat? (like steeper acorn style)

i'm going to just keep it as is now, and see if the lugnuts get loosened next couple of days.