Proper lug nut torque?

[lpquick]

I have received my new 18" rims w/ 225/40 ZR18 Michelin Sport Pilot PS2's. I will swap out the original 16" wheels tomorrow but need to know the proper torque for the lug nuts, and yes I know to retorque them again after about 500 miles.
Thanks everyone, what would I do without all the sound advice.
I'll post pics of the wheels alone and on my ride tomorrow after a test drive. Let's hope the tire rack know's their stuff and did me good... [driving2]

 

[bmwrocks]

My owner's manual recommends 88.5 lb-ft/120Nm with a calibrated torque wrench. Ours are probably the same, but look yours up in your manual just to be safe.

 

[dpnguyen]

As a EE, whenever the Mechanical Engineers ask me this question, I just say RFT (Real ****in' Tight)!

 

[epj3]

Yea, i agree with dpnguyen... as tight as fu*king possible without an air wrench.

 

[bmwrocks]

dpnguyen and epj3,

You guys seem convinced (or joking) that overtightening lug nuts is not a problem. Actually, all the experts agree that this practice can cause your rotors to warp.

While you are at it, be sure to crank down your oil filter cover as tight as possible without an impact wrench because you sure wouldn't want it to leak.

I assume you guys are just kidding, so I wrote this in case others did not know you are joking.

 

[xmas63]

Yea, i agree with dpnguyen... as tight as fu*king possible without an air wrench.

You won't be doing yourself any favors if you tighten so much that the bolt or the whatchamacallit that the bolt's going into fractures or begins to fail. A torque wrench is a small investment to help ensure your safety!

EDIT: bmwrocks, you beat me to it!

 

[olcrazy1]

I'm ASE Certified in many area's with steering and suspension being one of them. Not that anyone here really cares, but this was always my take on it..........................

Lug nuts should be between 90-100 foot pounds. It is very important not to over or under tighten, if you under tighten it may back off, if you over tighten you may warp the wheel, specially with aluminum they bend easily. It is also very important that you have a consistant torque on all the lugs, you don;t want 85 on one and 120 on the next. Use a torque wrench or torque stick you have have an impact gun and use the star pattern when tightening them.

So main keys are to use a consistant torque for all the lugs, snug first, then tighten after.
I would use 95 ft/lbs around the car.

 

[lpquick]

Torque em down!

Thanks everyone, good advice as usual. I found the manual late last night and it said 88.5 ft lbs. So that's what I'll do. Until next time, later...