Bux

what do i do it at?

hammyoni

too lazy to hit the manual, but ive always stuck to the rule of 90.

AMG BRED

90 is i think too much... might damage rotors.. someone correct me if i am wrong.

hammyoni

many cars are over 100. Im going with my vw and audi models, always 89-90. Of course MB may be different, but ive always felt the 89 was conservative. All cars are different, best to find it in the manual or from the dealer. Ive been doing my amg's at 90.

Bux

discount tire and another benz board said around 80-85 i have looked on the gas lid and manual couldn't find any info

hammyoni

try calling the service center at your dealer. When Ive done 80, and check to retorque the lugs a week later, they arent in there too tight. This is why I stick to 90. They are tight, but dont take super strain to remove.

AMG BRED

so tempted to press that tele-aid button and ask them.. never used it

RapidG

At MBCA events, we use 82 ft lbs of torque to check cars before they go on the track. That's the "offical" mercedes torque. BUT if you use anti-sieze compound, you should really torque at a lower level. I have a manual which gives different torque values for the type of lubricant which are on the threads. What you're actually measuring is the resistance between the bolt and the threaded wheel. If a lubricant is used, it stands to reason that the resistance will be lowered at some theoritical "tightness". That said, we ignore anti-seize compound and use 82 ft. lbs. at tracks!

hammyoni

Then you open a can of worms on the use of anti-seize compound on lugs...

levelr123g

if you look at your manual under changing a tire, it is clearly posted there. i always use 85 lb/ft with NO lubricant.

Vadim @ evosport

80-85

rrf

Yep, clicker torque wrench is always set at 85 for me. Retest a week later, it only takes a couple of minutes.

steve s

volvo lists 81 lb-ft... so it's not low to go 80-85...worse thing to do is warp a rotor by overtightening it....

RapidG

Probably 5 lbs torque one way or another is within the margin of error of most torque wrenches, anyhow, so set somewhere in the middle. 82 or 83 will probably get you somewhere between 80 and 85.

RapidG

Probably 5 lbs torque one way or another is within the margin of error of most torque wrenches, anyhow, so set somewhere in the middle. 82 or 83 will probably get you somewhere between 80 and 85. This ain't rocket science. Torque is not that exact a measurement, anyhow. Depends upon the quality of threads, whether or not they have any lubricant on them, temperature, etc.

Greg Elmassian

I've found that anti-sieze as related to clean threads (not dry mind you!) can change the torque by 5-10 ft-lbs.

I'd think 90 dry would be fine, all of the cars I've owned in the last 20 years (corvette, nissan 300zx, audi a8, etc.) have been 90 or so. I'd torque to 85 with anti-sieze.

Greg

smgC32

Factory Spec is 80lbs for the C32. This is consistant with most lug bolts with the same diameter and thread pitch. Do no go below, and a few pounds above is OK. I use 82lbs as this is the spec for my other car and is set at that point on the wrench.

carl

damn, i used 120 lb.....
since mercedes are always heavier duty than others...