Allpar Forums banner

1 - 17 of 17 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter #1
My question is simple. Why does the Durango have 6 lugs?
What the rumor mill has said.
1. Dodge engineers are sadistic.
2. The Viper engineers are the real creators of the Durango.
3. Because the Durango tow and payload place it between a 1500 and 2500.
4. Because Dodge hates me.
5. No one knows.
 

·
Registered
Joined
·
2,049 Posts
6 lugs have more load capacity than 5.

Chrysler isn't the only one using 6, I've seen them on Cadillacs and Kias in recent years.

Thanks
Randy
 

·
Registered
Joined
·
3 Posts
Discussion Starter #3
I understand 6 lug has a higher load capacity. I am wondering if that is the actual reason. Are the Durango specs such that it was required or was it something else. The Durango only has a 200lb higher payload but 500lb lower towing.

2000 Ram 1500
payload 1716.0 lbs
towing 4650 lbs.

2000 Durango
Payload 1,900 lbs
Towing 7,300 lbs

2000 5.9 Cummins 2500
payload (4x4) 3370 lbs
Towing 9450 lbs

By the numbers it makes sense but it is not dictated anywhere. I was just wondering if anyone had solid info on this.
 

·
Registered
Joined
·
3 Posts
Discussion Starter #4
I understand 6 lug has a higher load capacity. I am wondering if that is the actual reason. Are the Durango specs such that it was required or was it something else. (edited out)

2000 Ram 1500
payload 1716.0 lbs
towing 4650 lbs.

2000 Durango
Payload 1,900 lbs
Towing 7,300 lbs

2000 5.9 Cummins 2500
payload (4x4) 3370 lbs
Towing 9450 lbs

By the numbers it makes sense but it is not dictated anywhere. I was just wondering if anyone had solid info on this.
 

·
Super Moderator
Joined
·
36,924 Posts
2. The Viper engineers are the real creators of the Durango.
That is backwards. Durango came from Dakota which had 6 lugs. Viper came later after 6 lug Dakota.

I’ve had 6 lug Dakotas and a Durango for years. Never had an issue.
 
  • Like
Reactions: Bob Lincoln

·
Super Moderator
Joined
·
36,924 Posts
I understand 6 lug has a higher load capacity. I am wondering if that is the actual reason. Are the Durango specs such that it was required or was it something else. The Durango only has a 200lb higher payload but 500lb lower towing.

2000 Ram 1500
payload 1716.0 lbs
towing 4650 lbs.

2000 Durango
Payload 1,900 lbs
Towing 7,300 lbs

2000 5.9 Cummins 2500
payload (4x4) 3370 lbs
Towing 9450 lbs

By the numbers it makes sense but it is not dictated anywhere. I was just wondering if anyone had solid info on this.
You can increase the “clamping force” for lack of a better term by adding another lug nut (Dakota/Durango) or increasing the bolt circle (Ram).
 

·
Registered
Joined
·
2,049 Posts
Exactly, I'm thinking 6 lug hubs are somewhat based on 5 lug hubs.

EG: Dakota 6 lug hubs are still a 4.5" bolt circle.

Way back in time Dodge 1/2 t bolt circle increased from 5 on 4.5" to 5 on 5.5"

One possibility is it's more cost effective to add a stud rather than increasing the bolt circle.

I believe Kia followed the Dakota in retaining the 4.5" bolt circle.

Thanks
Randy
 

·
Registered
Joined
·
4,633 Posts
The reason that Dodge engineers changed the # of lug bolts on Dakotas and later Durango (Dakota based) was for avoidance of product liability. When the Dakota was introduced in 1987 standard wheel size was 14 inch rim with 15 inch optional. In 1991 the load rating on the Dakota was increased. Standard wheel size became 15 inch but the bolt diameter remained at 114.3 mm. Engineers did not want the 14 inch wheels from the 1987 to 1990 era to be fitted to a 1991 and later Dakota (inadequate load capacity and potential legal liablility) so the easiest and cheapest solution was to install 6 wheel lug nut bolts.

All wheel hubs have a circular center lip that mates to a center bore in the wheel rim. This is what carries most of the weight. Wheel lug bolts just keep it in place so 4 would be sufficient to keep a wheel in place to carry the load.

In 1994 Dodge Ram 1500 had a major styling and engineering make-over. It used 16 inch wheel rims with a 5 lug bolt pattern with bolt circle diameter of 139.7 mm. Larger truck with greater payload but it used only 5 bolts, not 6 like the lighter Dakota.

And I am pretty sure GM for a while used 6 lug bolts on the wheels on its 1500 series (1/2 ton) Chevy and GMC trucks in the late 1990s and into the early 2000s. Wheel bolt diameter was not changed but load capacity increased. Engineers were concerned about earlier era wheels with lower load capacity being used on later model trucks. Solution: use 6 lug bolts and that prevents different era wheels being used.
 

·
Registered
Joined
·
2,049 Posts
I remember those, thought it was an illusion at first!!

They were actually hub centric, not lug centric.

Thanks
Randy


It could be worse. Anybody remember the light duty Ford F250s from the late 90's-early 2000's that had 7 lugs?
 

·
Registered
Joined
·
1,291 Posts
Little Red Express wheels have a plastic bullet shaped center cap. This cap will rattle sometimes. A few pieces of tape or dum-dum will stop the rattle. The wheels are held in place by the taper of the wheel lug nuts, not the center hole.

The old 1/2 ton Chevy Blazers used 6 lugs, but the studs were only 7/16" diameter.

The old D 100's and W 100's used a 5 by 4.5 bolt pattern. These were bigger trucks with more payload. So the strength of the wheel studs [5] is at least adequate. The strength of the flange and the wheel itself should be considered. Also, the GVWR of the Dakotas increased over the years. Maybe the engineers just wanted a little more safety factor. I think they went to a 9/16" stud dia. on the newer trucks.

After decades of abuse, I've never had a 5 lug Dodge wheel or stud fail. The old 440 Imperials fully loaded were well over 6000 lbs.
 

·
Registered
Joined
·
2,049 Posts
The bolt circle is increased from 6 on 4.5" to 5 on 5.5" like the full size Ram.

As mentioned, the diameter of the bolt circle is an important factor.

Thanks
Randy
 

·
Super Moderator
Joined
·
13,926 Posts
Yet Ford also went with six lug wheels starting 2004 on it's F150 but, it has a small bolt pattern, the exact size escapes me.
 

·
Registered
Joined
·
998 Posts
It could also have something to do with where they buy axles.. AAM... the availability of parts at a given spec for there requirements is the a 6 bolt that AAM also sells to GM. Same as the axles shared in HD trucks, even though there are slight difference between makes ...mostly the same.
 
1 - 17 of 17 Posts
Top