Ultraman

My 2011 E350 comes with the factory wheels, anyone know what is the dimensions of the OEM wheel studs?

I think I need to buy the extended wheel studs for the winter wheels. The tire shop gave me some crappy quality wheel studs with the winter package last year.

I heard RAD has some good quality wheel studs similar to the OEM quality.

Thanks.

nawlinstornado

Factory are 14x1.5 27mm

Ultraman

How about the ball seat? I checked the RAD web site, the bolts have different ball seats such as R12, R13 and R14. It is so confusing.

nawlinstornado

Got me on that one. I'd contact RAD.

Ultraman

Ball seat for 14mm X 1.5? or cone seat?

Why it is so complicated?

nawlinstornado

Definitely ball or radial, not cone, for factory wheels. If you're getting lug bolts for non-MB wheels, you'll have to check. Use your finger (works for me) or contact the wheel manufacturer.

Ultraman

Oh really? they look like "cone" seat to me.

Yes, you are right, maybe, I should bring the lug bolts to the wheel shop and ask for the bolt information.

Thanks anyway for your help.