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Lug nut size?

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Old Oct 19, 2003
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Lug nut size?

What size (in mm) socket are the stock lugs? I'm looking to get an torque stick and impact socket
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Old Oct 19, 2003
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19mm / 3/4"
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Old Oct 19, 2003
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NO not 3/4".. you'll strip the bolt eventually. the lugs are 19mm.. every bolt on the car is metric.
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Old Oct 19, 2003
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3/4" = 19mm :P You won't ever strip the bolt... Unless you take your lug nuts off about every 30 seconds.
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Old Oct 19, 2003
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it's still highly frowned upon.. at the force you should be tightening them, a 3/4" socket could easily warp the lugs. you can fit a 3/4" socket over a 19mm bolt, but you can't fit a 19mm socket over a 3/4" bolt. very slight size difference.
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Old Oct 19, 2003
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19mm = .748"
Then judge the tolerance of the tool, which I highly doubt is .002" and a 19mm socket is effectively the same as a 3/4" one.
You shouldn't be using air tools to torque lugnuts anyway... thats a quick way to ruin the nuts and your wheels.
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Old Oct 20, 2003
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can you explain why it would be bad? I plan on using 80 ft-lb torque sticks to drive the lugs
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Old Oct 20, 2003
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Originally posted by Boilermaker1
19mm = .748"
Then judge the tolerance of the tool, which I highly doubt is .002" and a 19mm socket is effectively the same as a 3/4" one.
You shouldn't be using air tools to torque lugnuts anyway... thats a quick way to ruin the nuts and your wheels.

i heard using air tools is the wrong way to Torque the lug nuts? thats just waht i heard!!
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Old Oct 20, 2003
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Actually, if you use an impact gun/torque stick the proper way, it will not ruin your wheels or nuts at all. Don't bolt on with a regular socket, use a torque reducing stick (torque stick). Always make sure you hand tighten first.

I actually think it's kind of stupid to use an impact gun to bolt on though. It's VERY easy to over-torque even when using a torque stick. I always bolt mine on by hand then use a torque wrench. It really doesn't require much extra effort.

Here's the procedure we use to bolt on at Discount Tire:


Last edited by slystad810; Oct 20, 2003 at 12:19 AM.
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