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Wheel spacers

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Mudslutk51984

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Ok fellas, I am running 35/12.5R15 rims and tires... I bought some wheel spacers a few years ago and only put them in the rear because I wanted to change the studs out for longer ones and did so because it was easy enough ... they have done fine ever since.. I didn't put them on the front because I was going to change the front studs out for longer ines as well but that requires a tear down of the hub etc... I just dug them out of storage and was thinking about just slapping them on but it bothers me because the stud tops are flush with the fastening nuts which is about 1/2"-3/4" (give it take a little).... an I right to keep them if for now til I change out the studs for longer ones or has anyone else just ran stick studs and put lock tire on them?? They are for my k5 of course.. sorry for all the threads I am just getting into fixing up the old blazer and it's exciting!!!

PS: I know what everyone says about spacers unfriendly friendship with spindle bearings but I'm too concerned about that...
 
What are you gaining with the spacers?


Oh and I hate spacers, just so that's out there...
 
stock gm 1/2 ton was tiny 7/16 stud size . . .

and good rule of thumb over the years I have used and others have said is 5 full turns of the lug nut of thread is min amount to call it safe . yes flush or stud past open end nut is better .

I have been running bolt on wheel spacers for almost 10 years on my narrow c&c 14ff rear to make it same width as stock 14ff with no problems . I live in the salt belt rust belt and its on a plow truck . 1/2 the time its aluminum rims in nice weather and stock steels in snow season . no problems yet and there cheep ebay ones.
 
So I have 2" spacers on all four tires... just to be clear as long as I can get 5 full lug twists I'm good on a 7/16-20 stud half ton set up???
 
I have 2.75" per side on the rear and 1.5" per side on the front to correct the high positive offset on NBS wheels. I changed all my studs to 1/2" because I was scared of the 7/16" studs.
 
MAX89K5 said:
I have 2.75" per side on the rear and 1.5" per side on the front to correct the high positive offset on NBS wheels. I changed all my studs to 1/2" because I was scared of the 7/16" studs.
Click to expand...


How did you change the size?! My understanding is the rotor only takes 7/16
 
I use extended thread lug nuts with thicker alloy whees and/ or wheel spacers.extthreadlug.jpg
 
I put 2000+Chevy dealer take-off with new rubber on them onto my '86 Blazer and the spacers were necessary to let the rims miss the front calipers.

Here's a machinist's rule on thread length. .....

The height of contact with threads to nuts is no better if your nut is higher than the stud is in diametet.

IOW..... the thickness of the male thread sets the minimum thread contact for the nut. A 1/2" stud should have 1/2" nut height as there is nothing gained by having longer or deeper nuts over the thread diameter.

This assumes that decent metallurgy standards are involved here. Some ..... no, make that "most" Chinese steel is suspect.

FWIW, Pakistani or Indian steel is superb. ....so there's that to consider.
 
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