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Amg · 03-17-2018, 02:53 PM

I have a 2016 Interstate. After having a tire changed I noticed a missing lug nut on the rear tires. Since one of the two dual tires is on the Alcoa aluminum rims, I don’t know if it is a Mercedes or Airstream part. Can someone tell me the part number or description and where it can be purchased. Thanks

Teamaron · 03-17-2018, 02:56 PM

Hi
Yes
Same happened to me

https://zips.com/parts-search?searchQuery=Sp39

Teamaron · 03-17-2018, 02:58 PM

I now carry about 6+\- on a regular basis

Amg · 03-17-2018, 03:02 PM

Quote:

Originally Posted by Teamaron

Hi
Yes
Same happened to me

https://zips.com/parts-search?searchQuery=Sp39

.

Thanks for help. Is this the nut with a cover for the nut?

Teamaron · 03-17-2018, 03:55 PM

No
Those are just the lug covers

Teamaron · 03-17-2018, 03:56 PM

Same place may have the lugs as well

Amg · 03-17-2018, 04:14 PM

It appears they are 19 mm nuts. I wonder if they are just standard nuts I can buy in an auto store or special since have Alcoa Wheels

Boxster1971 · 03-17-2018, 04:20 PM

The lug nuts are a Mercedes Sprinter part. The chrome lug nut covers are an Alcoa part but also widely available from other sources.

felixkagi · 03-18-2018, 07:43 AM

Quote:

Originally Posted by Amg

I have a 2016 Interstate. After having a tire changed I noticed a missing lug nut on the rear tires. Since one of the two dual tires is on the Alcoa aluminum rims, I don’t know if it is a Mercedes or Airstream part. Can someone tell me the part number or description and where it can be purchased. Thanks

If the lug nut just got lost that is one thing if it came off while driving that is quite another issue. Aluminum wheels especially need proper torque and on the 3500 that is 133 ft lbs (higher for steel wheels). I have had tire replacement done on the road and upon paying the bill asked to what number the wheel was torqued, then was told we use an air wrench and don't torque. To that I say, I pay the bill once the wheel is torqued to specs.

A torque wrench is a small investment so now we do that in-house before a long trip.

Boxster1971 · 03-18-2018, 05:46 PM

Good point Felix. Torquing with a proper wrench is important. Too many so called mechanics use the air impact wrench on lug nuts. Once over torqued the wheel studs are stretched and getting proper torque after that is problematic.