Correct wheelnut tightening procedure DB9?

Correct wheelnut tightening procedure DB9?

Author
Discussion

Bomber Denton

Original Poster:

8,759 posts

269 months

Tuesday 24th January 2012
quotequote all
There's a couple of conflicting opinions on the correct procedure on tightening/final tightening on a 2005 DB9?
Can anyone give me the correct one?
Thanks in advance.

mikey k

13,011 posts

217 months

Tuesday 24th January 2012
quotequote all
From the Vantage 4.3 manual

Wheel Nut Torque
Tighten every second nut until all five nuts are tightened.
Tighten all wheel nuts in two
stages.
1. To 70 Nm (52 lb. / ft.) in
one continuous
movement.
2. To 180 Nm (133 lb. / ft.)
in one continuous
movement.

BingoBob

1,098 posts

148 months

Tuesday 24th January 2012
quotequote all
Wow, 180Nm is a lot.

mikey k

13,011 posts

217 months

Tuesday 24th January 2012
quotequote all
Yep feels awkward especially with the locking nuts frown

brakedwell

1,229 posts

200 months

Tuesday 24th January 2012
quotequote all
First tighten the nuts to 60 lb/ft then finally to 100lb/ft torque.

George H

14,707 posts

165 months

Tuesday 24th January 2012
quotequote all
brakedwell said:
First tighten the nuts to 60 lb/ft then finally to 100lb/ft torque.
yes

That's what my manual says.



I wonder why the V8V requires more torque on the wheel nuts?

DB9VolanteDriver

2,612 posts

177 months

Wednesday 25th January 2012
quotequote all
Bigger lugs ?

peterr96

2,226 posts

176 months

Wednesday 25th January 2012
quotequote all
What's the current thinking on copperslip (or the like) on studs before putting "nuts" on?
I suppose expand that question to outside of the nuts too where they interface with the alloy wheel?

mikey k

13,011 posts

217 months

Wednesday 25th January 2012
quotequote all
I have always used a very very small amount. Too much and it melts and runs all over the wheel frown

BingoBob

1,098 posts

148 months

Wednesday 25th January 2012
quotequote all
peterr96 said:
What's the current thinking on copperslip (or the like) on studs before putting "nuts" on?
I suppose expand that question to outside of the nuts too where they interface with the alloy wheel?
Bad idea. It makes accurately setting the torque impossible and can allow your lugs to loosen themselves with vibration. Learned this the hard way frown

BingoBob

1,098 posts

148 months

Wednesday 25th January 2012
quotequote all
This is what it says in my manual (V8V 2009MY):

Wheel Nut Torque
Tighten every second nut until all
five nuts are tightened.
Tighten all wheel nuts in two
stages.
1. To 60 lb. / ft. (80 Nm.) in one
continuous movement.
2. To 133 lb. / ft. (180 Nm.) in
one continuous movement.

Lunablack

3,494 posts

163 months

Wednesday 25th January 2012
quotequote all
The v8v tightening torque depends on what size nuts are in use....22mm or. 24mm. The settings are different for each... So best to check before getting the torque wrench out...


Somthing I've done in my garage is put up a white board...

Then I've written tyre pressures, wheel torque, service due, mot due dates etc etc for all my cars...smile

Really useful, a quick glance is all it takes to get the info..smile

peterr96

2,226 posts

176 months

Wednesday 25th January 2012
quotequote all
BingoBob said:
Bad idea. It makes accurately setting the torque impossible and can allow your lugs to loosen themselves with vibration. Learned this the hard way frown
I'll not do that then!


DB9VolanteDriver

2,612 posts

177 months

Wednesday 25th January 2012
quotequote all
peterr96 said:
What's the current thinking on copperslip (or the like) on studs before putting "nuts" on?
I suppose expand that question to outside of the nuts too where they interface with the alloy wheel?
Lubricants used on the thread results in overtorqueing the nut and thereby overstressing the lug. Torques are based on clean, dry threads at assembly.

Bomber Denton

Original Poster:

8,759 posts

269 months

Wednesday 25th January 2012
quotequote all
Thanks for this guys!