I replaced the original oem lugnuts with dorman mb579290 from rockauto parts a few years back and want to know what size lugnuts are they? I got a slow leak in my tire and am going to take it to my tire store and I want to let them know what size wrench to use. Any help on ths would be appreciated.

 

Google is good in these cases

Dorman Products

Enter MB579290 into the search box and we find that the hex size is 21mm, thread size is m12-1.5, and the overall length is 37mm

I suspect, though, that your tire store will be able to determine the correct socket size on their own.

Cheers
DD