lug nuts question

[chazlock]

hi I'm chaz and have a 2018 focus se. these cars are a pain. looking to replace my lug nuts without caps. which seating do I need? seem to have 3 different lug seatings.

 

[Handy Andy]

Most of the Focus line use M12 X 1.50mm (Pitch) thread size, usually fits a 19MM socket.

But the seat configuration you're looking for is called "Bulge Seat" style. Also known as Conical.

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To use the word "Bulge Seat" is for the use in USED wheels - and new.

When a wheel is driven on, then removed and its tire replaced then placed back on - some wear at the seat occurs during the lifetime of that tire that was used on it. The seat - it can deform enough to make the wheel wobble - so the "Bulge" seat types are slightly oversized to handle the seating and proper torque needed to keep the wheel to the hub and you on the road.

To Help: Notice the "Bulge Seat" style
is slightly oversized compared to a typical Conical style
Either way:
They can also be called Acorn - because they look like what Squirrels go after in the Fall.
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So conical and Bulge Conical and Bulge Seat - are adequate - but when replacing these Wheel nuts, remember that if you put them on, you become responsible for their proper torquing and use.