MCI wheel lug nut sizes - updated

[bevans6]

I'm trying to order all new lug nuts for my bus.  My local tire guy says he can get the too-tight ones off if I bring the bus down to him, so i want to have him install new nuts all round.  1980 MCI MC-5C, stud centered, tapered lug nuts, I need to know the stud diameter and thread pitch for the fronts, and for the rear studs.  I need to buy the  inner lugs and outer nuts for the rear duals, left hand thread on the left side of the bus and right hand thread on the right hand side of the bus.

I am flabbergasted that I googled for half an hour and could not find this out.   Help appreciated!

Brian

[Len Silva]

Great Googly Moogly!

[bevans6]

So you don't know the thread diameter and pitch on the studs either, eh?  I don't feel so lonely somehow...

   

Brian

[NJT 5573]

Brian,

I've never owned an MCI, but I would think the pitch is SAE and the fronts are 1 inch, the rears are usually 5/8 also using 1 inch nuts. Get the length right on the rears. You should replace the studs in the hubs, they get the stress, not the nuts.

[DaveG]

Hold up there...I'm not a bus guy but I don't think those numbers sound right...lemme do some checking.

[DaveG]

Does your tire guy think that they are different than a 18 wheeler?

[John316]

Here is what we found on our DL3 (I would assume yours would be the same).

Truck studs didn't work for us. We tried, and tried, and tried. Finally we ordered them from MCI. Ours were specialty, but I don't know the specs. Why don't you just try calling MCI tech support? They will know....

God bless,

John

[DaveG]

FWIW, truck studs are 3/4" (rear) and steer 1-1/8"...from memory!

[johns4104s]

Call Luke he will know the right size and is 1/10th price of MCI

John

[John316]

Call Luke he will know the right size and is 1/10th price of MCI

John

That's a good idea. We ordered ours full price from price kingdom .

God bless,

John

[wildbob24]

Brian,

Studs on the front will be 1-1/8-16 as is the outside thread of the inner nuts on the rear. The stud the inner nut screws onto in the rear will be 3/4-16.

[johns4104s]

Brian,

The reason I recomend Luke or Bill is that they know,

Alumminum wheels -one size
Steel wheels another size
Aluminum on the out side dual steel on the inside-another size
Both aluminum on the dual-another size
type of wheel-another size

It goes on and on,

Call Luke

John

[bevans6]

Thanks very much, guys.  the theory was that I would pop out to a local truck parts company this morning and have the bus at the tire shop getting the lugs replaced and torqued today or tomorrow, which lets the normal US based suppliers out.  But I may have to put this off for a while, no need to rush.  Bus isn't scheduled to go anywhere till October now.

Being in Hamilton, Ontario, which is a pretty decent industrial town, we actually have a very decent heavy vehicle support industry.  It's probably good for me to start find out who the good guys are for normal support stuff.

Brian

[johns4104s]

Brian,

You will have great difficulty finding the studs you need,not impossible. I looked all over Chicargo, they were close but three threads short.  Let us know how you make out.

[bevans6]

So far I am only looking for lugs, not studs.  With any luck at all the studs will be OK.  But only taking the wheels off will let me actually check the studs, so we'll wait and see.

Brian