Luke: Lug Torque Question
#1
MBWorld Fanatic!
Thread Starter
Join Date: Sep 2005
Location: Lawrence, KS (USA)
Posts: 2,098
Likes: 0
Received 0 Likes
on
0 Posts
S500/W220/2000
Luke: Lug Torque Question
Just had summer tires put back on and your installer wasn't sure how much torque to put on the lugs. One guy said 80 and another one said 110. I think they used 85 lbs., but would like to know what you would advise for my situation?
My situation:
18x8.5 AMG Double Spoke Bright Sil
18x9 AMG Double Spoke Bright Sil
245/45WR-18 Goodyear Eagle F1 GS-D3 XL
275/40YR-18 Goodyear Eagle F1 GS-D3
(Standard lug bolts for my S-class.)
My situation:
18x8.5 AMG Double Spoke Bright Sil
18x9 AMG Double Spoke Bright Sil
245/45WR-18 Goodyear Eagle F1 GS-D3 XL
275/40YR-18 Goodyear Eagle F1 GS-D3
(Standard lug bolts for my S-class.)
Last edited by Jayhawk; 03-25-2006 at 11:35 AM.
#2
Super Member
Join Date: Sep 2005
Location: Covington wa
Posts: 927
Likes: 0
Received 0 Likes
on
0 Posts
05 SL500, 02 BMW Z3 (Mrs. VF), 05 FJR1300, 91 ZX-11
Your manual should say. Off the top of my head I think 85 is more correct. 110 definitely not. I seem to remember 75 last time I rotated the tires on my CLK.
#3
MBWorld Fanatic!
Thread Starter
Join Date: Sep 2005
Location: Lawrence, KS (USA)
Posts: 2,098
Likes: 0
Received 0 Likes
on
0 Posts
S500/W220/2000
That's what I thought too, but the Operator's Manual says "It is imperative that ..." they be tightened "to 110 ft. lbs. of torque." But they are talking about the OEM, 16" wheels. I don't know if it is different for the 18" wheels or not. I am hoping Luke will be able to settle this before my wheels fall off.
![drive](https://mbworld.org/forums/images/smilies/driving.gif)
#4
MBWorld Fanatic!
Thread Starter
Join Date: Sep 2005
Location: Lawrence, KS (USA)
Posts: 2,098
Likes: 0
Received 0 Likes
on
0 Posts
S500/W220/2000
110 IS required for all S-Class
OK: I just got an email from the top tech at my dealer's service dept. and he said 110 is standard for all S-class cars!
#6
TR Moderator & Tire God
Join Date: Nov 2001
Location: SouthBend, IN USA
Posts: 3,545
Likes: 0
Received 5 Likes
on
5 Posts
depends on the weather
Hardware Size / Torque in Ft/Lbs
10MM / 45-55
12MM / 70-80
14MM / 85-90
7/16" / 70-80
1/2" / 75-85
9/16" / 135-145
Size of Bolt or Stud / Mininum Number of Turns
14x1.5mm / 7.5
12x1.5mm / 6.5
12x1.25mm / 8
1/2" / 8
9/16" / 8
NOTE: Since the thickness of an alloy wheel can differ from Original Equipment wheels, also verify that the threads will be engaged by the lug nuts or bolts. Refer to the chart (above) to determine the number of turns or the depth of engagement typical for your stud or bolt size.
10MM / 45-55
12MM / 70-80
14MM / 85-90
7/16" / 70-80
1/2" / 75-85
9/16" / 135-145
Size of Bolt or Stud / Mininum Number of Turns
14x1.5mm / 7.5
12x1.5mm / 6.5
12x1.25mm / 8
1/2" / 8
9/16" / 8
NOTE: Since the thickness of an alloy wheel can differ from Original Equipment wheels, also verify that the threads will be engaged by the lug nuts or bolts. Refer to the chart (above) to determine the number of turns or the depth of engagement typical for your stud or bolt size.
#7
MBWorld Fanatic!
Thread Starter
Join Date: Sep 2005
Location: Lawrence, KS (USA)
Posts: 2,098
Likes: 0
Received 0 Likes
on
0 Posts
S500/W220/2000
Originally Posted by Luke@tirerack
Hardware Size / Torque in Ft/Lbs
10MM / 45-55
12MM / 70-80
14MM / 85-90
7/16" / 70-80
1/2" / 75-85
9/16" / 135-145
Size of Bolt or Stud / Mininum Number of Turns
14x1.5mm / 7.5
12x1.5mm / 6.5
12x1.25mm / 8
1/2" / 8
9/16" / 8
NOTE: Since the thickness of an alloy wheel can differ from Original Equipment wheels, also verify that the threads will be engaged by the lug nuts or bolts. Refer to the chart (above) to determine the number of turns or the depth of engagement typical for your stud or bolt size.
10MM / 45-55
12MM / 70-80
14MM / 85-90
7/16" / 70-80
1/2" / 75-85
9/16" / 135-145
Size of Bolt or Stud / Mininum Number of Turns
14x1.5mm / 7.5
12x1.5mm / 6.5
12x1.25mm / 8
1/2" / 8
9/16" / 8
NOTE: Since the thickness of an alloy wheel can differ from Original Equipment wheels, also verify that the threads will be engaged by the lug nuts or bolts. Refer to the chart (above) to determine the number of turns or the depth of engagement typical for your stud or bolt size.
You don't usually re-reply to threads, but how would your formulae about apply to my S-class w/ your AMG wheels? Would it result in 110 too, or do I still have it wrong?
Here is what you sold me:
225/60QR-16 Michelin X-Ice
18x8.5 AMG Double Spoke Bright Sil
18x9 AMG Double Spoke Bright Sil
245/45WR-18 Goodyear Eagle F1 GS-D3 XL
275/40YR-18 Goodyear Eagle F1 GS-D3
Trending Topics
#8
MBWorld Fanatic!
Join Date: May 2005
Location: New Jersey
Posts: 2,825
Likes: 0
Received 3 Likes
on
3 Posts
things with and without wheels
If you dont change the size of fasteners then the torque will stay the same , unless you change the rims to a different material like aluminum to steel or vice versa.
#9
MBWorld Fanatic!
Thread Starter
Join Date: Sep 2005
Location: Lawrence, KS (USA)
Posts: 2,098
Likes: 0
Received 0 Likes
on
0 Posts
S500/W220/2000
Originally Posted by RobertG
If you dont change the size of fasteners then the torque will stay the same , unless you change the rims to a different material like aluminum to steel or vice versa.
I use the same lug bolts, but am not sure if the wheels are the same material--though I suspect they are, w/ the OEMs and the AMGs.
When I look at that table of Luke's though I can't imagine that it would ever come up to 110 ft.lbs. so would still like to see what Luke says.
#11
MBWorld Fanatic!
Thread Starter
Join Date: Sep 2005
Location: Lawrence, KS (USA)
Posts: 2,098
Likes: 0
Received 0 Likes
on
0 Posts
S500/W220/2000
Originally Posted by meanie
The 110 is probably Nm ( Newton meters ), which is 81 ft/lbs
.
![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)