Max spacer thickness?

Michael Perez

Michael Perez

Well-Known Member
556
154
Miami, FL
Vehicle Model
2012 Civic Si
Body Style
Sedan
This might have been covered before but would you all say 5mm spacer on factory Si studs is the maximum but still safe to run?

Thanks
 
Dennis Rockholt said:
I am running 20mm on my stocks and it is perfect. Also, lowered and have had NO rubbing issues
Click to expand...

I mean spacers though specifically how many turns of the lug but are considered safe.
Adapters are the ones that bolt to the hub then the wheels bolts to the adapter.
 
The rule of thumb with lug nuts is that you need to engage as many threads as the diameter of the lug nut. I don't know the size of the 12'+ civic off hand but it's probably12mm & Honda thread pitch is 1.5mm per thread.

You'll need 8 turns of the nut to engage 12mm worth of threads.
8 turns x 1.5mm = 12 mm of engagement
7 turns x 1.5mm = 10.5mm
6 turns x 1.5mm = 9mm
5 turns x 1.5mm = 7.5mm

Take one off and put it back on until it's tight and see how many turns you get. If it's only 4-5 till it's tight I think you might be running a little short. 7? You're probably ok. I'd say get extended studs with a 5mm spacer just to be safe but check it out and see what it looks and feels like to you. 3mm spacer is usually the max you can safely run.
 
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