M1009 4inch Lift - Tires Wheels Bolt Pattern Offset???

[DaveDawson]

I am installing a 4" BDS lift including the new rear springs. I am going to go with a 35x12.5x15 tire. The wheels are the part that confuses me. I see 6x5.5 and 6x4.5. I am assuming this is the distance measurement for the bolt pattern. I have measured the pattern on the truck and I get 2.75" or 7cm didtance center to center.
The offset is all over the place. How do I determine the offset required for the larger wheel and tire. I have been all over the net looking for some type of chart and what all this means.
Since I am a member of this site, I decided to ask the guys that are the experts. Any help is greatly appreciated.

 

[gringeltaube]

Your correct bolt pattern is 6x5.5" (= 6 lugs/studs placed on a 5.50" diameter).
For that size tires I would go with 15x10"-wheels with a 3.75" backspace, max. 4.0".


G.

 

[DaveDawson]

15x10 3.75 backset, which is -51, and 6 lug 5.5 pattern.
Thanks!

 

[Chaski]

I wouldn't get too crazy buying wheels just yet. I don't know what the limitations are on 15" wheels on 10 bolt axles, but personally I would run a wheel narrower than 10", with at least 4" backspace. You can run into scrub radius issues with wide wheels and small backspacing. It pushes the centerline of the tire so far away from the pivot of the knuckle that you end up having clearance issues at full steering lock. I do not know what issues you may have with 15" wheels with large backspacing, the back part of the rim may come in contact with ball joints. Keep it in mind that HMMWV wheels are 8.25" wide and they run 12.5" wide tires.

 

[DaveDawson]

What are you running on yours?

 

[Chaski]

Mine is on M1008 axles, so I can't run 15" wheels as they won't clear the brake caliper without cutting a lot of material off the caliper. I have 16.5x8.25" HMMWV wheels that are recentered. I have flat centers, so the backspacing is maxed out as far as HMMWV wheels go. My backspacing is about 4.5". With front fender trimming I can stuff the axle against the bumpstops at full lock and clear 37" tires

 

[gringeltaube]

................... the back part of the rim may come in contact with ball joints....

...or the tire's sidewall, if you had the 15x8" wheels with 4+ inches of backspace.

In that case better go with only 3 inches of BS, not 4".



G.

 

[98G]

33s are as far as I'd go with stock m1009 axles. More than that and you're courting a broken axle.

Jmho

 

[richingalveston]

Without changing axles,
I would do a 3 inch lift with the ord super flex springs and 33 inch x 12.5 wide tires which will fit the stock wheels if you want to keep them to save some money.
Spend the money saved on cross over steering and you will be able to get the most out of the 10 bolt axles. You can put some stronger axle shafts in and better hub locks and a front axle locker but any tire bigger than 33 and you will break the carrier in the diff..
If you stay with 33's and don't beat on it. Your truck will be the most capable it can be on 10 bolt axles with the above mentioned modifications.
If you wish to go bigger then don't spend a dime until you locate the dana 60 and 14 bolt you wish to use.

 

[Rustyshackelford]

I would stick with the 4'' lift and I would not do 35'' tires. I put at 4'' ORD lift on my m1009 and some 33x12.5R15 on the original rims and it works great. I would
not go with a 3'' lift because, with a flexey lift like BDS or ORD, you will still rub those 33s with a 4'' lift.

 

[beltfedonly]

I used the HMMWV radials on mine with 4 inch lift.

 

[DaveDawson]

What size rim and offset did you use and where did you get them?

 

[DaveDawson]

It doesn't look like you had to trim the fenders. Any fender rub. Do they rub on anything lock to lock. I have been looking at this option with a re-centered Hummer wheel. Have you off-roaded this rig?
Awesome looking ride, by the way!

 

[Ilikemtb999]

I would stick with the 4'' lift and I would not do 35'' tires. I put at 4'' ORD lift on my m1009 and some 33x12.5R15 on the original rims and it works great. I would
not go with a 3'' lift because, with a flexey lift like BDS or ORD, you will still rub those 33s with a 4'' lift.

I have a 2" lift with 33" tires and it will only rub fully flexed and wheel nearly at lock in the front. It's only happened once because that's not an ideal position to be in but was a must at the time.

 

[DaveDawson]

I used the HMMWV radials on mine with 4 inch lift.View attachment 572447

Also, are you on the stock axles?

 

[beltfedonly]

The wheels are the 16.5 US Wheels from Jegs. No trimming needed, it has a lot of clearance. Stock M1009 axles.

 

[Rustyshackelford]

I have a 2" lift with 33" tires and it will only rub fully flexed and wheel nearly at lock in the front. It's only happened once because that's not an ideal position to be in but was a must at the time.

On a lift with a lot of flex, like bds or ord, 33s will rub with a 4" lift.

 

[Ilikemtb999]

On a lift with a lot of flex, like bds or ord, 33s will rub with a 4" lift.

I have tuff country springs from ORD before they had their own springs.

 

[Recovry4x4]

One can set up their lift to keep the tires out of the fenders. I ran 35s and a 4 inch with spongy 52" springs with no issues. I did correct the bump stops to prevent tire rash which should be done an yways.

 

[DaveDawson]

One can set up their lift to keep the tires out of the fenders. I ran 35s and a 4 inch with spongy 52" springs with no issues. I did correct the bump stops to prevent tire rash which should be done an yways.

I am from Indiana. Thanks for the information.