Understanding MRAP

[Ramairgto72]

Hello All,
I have a 1968 M-715, I have swapped axles and need to run at least a 20" rim.
My question isn't about adapters for MRAP rims, i'm trying to understand the different combat rims associated with the swap.
The Aluminum rims seem to be in different styles, one seems to have a cast in "Dish" to the rim, and others flat and yet another with a deep-set bolt surface, are they even the same pattern?
As well, you see the CTIS types, assuming that won't affect anything but looks?
I just want to make sure I get the right rims for my project, any help would be appreciated.
Also, if you are selling, im looking.
SAPPER

 

[SDDiver5]

I feel like you'd be better suited posting this question on steelsoldiers. I think there is a limited amount of people on here that could really help.

 

[Ramairgto72]

I feel like you'd be better suited posting this question on steelsoldiers. I think there is a limited amount of people on here that could really help.

I found an old post on here where several people used them, very old posting.

 

[mog]

Maybe not a help in regards to your M-715, but below is a post I made regarding MRAP rims on the Mercedes LKW series of trucks. One of the issues is as most (not all) originally had dual rear wheels there is a need to 'flipped' them if they are on the rear to keep the front and rear tracks close to the same distance. Probably not an issue on a M-715. As @SDDiver5 mentioned Steel Soldier is a great resource. With a little searching there I was able to find diagrams of most of the MRAP style rims.

Link to post with photos - HERE

 

[Ramairgto72]

I second steelsoldiers, I wont be surprised its a PD maintenance officer who responds. Wikipedia lists the makers.

MRAP - Wikipedia

en.wikipedia.org

Idea being a off road construction parts supplier might have a clue.

I appreciate the warm reception, am I not...allowed to ask about how other people, in this group swapped over to MRAP wheels?
"General Vehicle Modifications" is the correct place to ask about "General Modifications to a Vehicle" is it not?
With respect, the question wasn't "Who Makes Them" (Hutchinson btw), it was the different styles so I can adapt them to my "overland" vehicle.

 

[Ramairgto72]

Maybe not a help in regards to your M-715, but below is a post I made regarding MRAP rims on the Mercedes LKW series of trucks. One of the issues is as most (not all) originally had dual rear wheels there is a need to 'flipped' them if they are on the rear to keep the front and rear tracks close to the same distance. Probably not an issue on a M-715. As @SDDiver5 mentioned Steel Soldier is a great resource. With a little searching there I was able to find diagrams of most of the MRAP style rims.

Link to post with photos - HERE

Thanks for the reply, and the link. In the SteelSoldiers forum, it's mostly about swapping those rims onto M35s, as it's mostly military equipment. F550 / Dana 80 axles are a bit "off subject".
THIS was why I joined, however it's a 2018 posting. One rim that was missing from your link , this was the rims I was going to get however, I wanted to talk to user mattcrouch1502 about his experiences with them first.
Thank you for the link, and a Kodak is really cool, don't they come with Dana 70 fronts?

 

[mog]

One rim that was missing from your link , this was the rims I was going to get however.
Thank you for the link, and a Kodak is really cool, don't they come with Dana 70 fronts?

At the time of that post, I just listed the MRAP wheels that I saw that were currently available, cheap ($50-$100 each), with the exception of the NSN#2530-01-479-2916 which were the wheels on my MB1017AF that the prior owner had paid $1000+ each plus shipping and about $200 per wheel in the required low-profile bolts. BUT prices always fluctuate, as about a year after sell the 1017A I found one of those wheels local to me (So. Oregon) for $75 and bought it to give to the buyer of my truck for a spare. The spares (2) that went with the truck were 'non-flippable' MRAP wheels, so only useable on the front. A rear flat would require pulling an in-use front tire/rim, swapping to the back and then mount the spare. The 'spare' Atlas rim curded that potential extra work. At 320ish pounds for the combo, the less work the better.

Correct, the C4500/5500 have a Dana 70HD (sometimes called a Super 70). So a high pinon 70 with 10.5 ring,1550 U-joints, reverse cut. Also for some reason the diff cover is different than a regular 70. They uses a 8x275mm hub centric lug pattern. That is the one and only downside to a C4500/5500 in my honest, certainly unbiased opinion 😇 It is darn near impossible to find 'good' super single wheels for the Kodiak. The 'mil-surplus' in that pattern are steel (crazy heavy+++) and most have had huge issues with getting them balanced and running true. International had 20" Alcoa made for their MXT series (and maybe some RXTs?), but those are unobtainable. There are of course the aftermarket makers (with mixed results). I run 22.5" Alcoa wheels which is my preference to run so 'commercial' tires for availability, cost, and characteristics (currently Hercules Ironman I-402, 385/65R-22.5)
BTW-welcome aboard. It is always go to see another project

 

[charlieaarons]

I put MRAP Hutchinsons (20x10”) on my U500 Unimog and the results are totally satisfactory.
Please be specific about what size tires you want to run. Presumably with internal bead locks, since that’s a massive advantage of 2 piece bolttogether wheels as opposed to alternatives.
In June I was able to remove and replace a 395/85R20 in the field (near Van Zyl’s Pass, NW Namibia) complete with beadlock. With the appreciated assistance of 5 Namibian cowherders under my 74yo direction.
Also please be specific about other questions. I know a bit about the subject.
PS: what axles did you swap to? Rockwells? Axletechs (now Meritor I think)?

 

[astubbs]

There are a number of different MRAP wheel variations, including some experimental ones with production runs of under 100 pcs so it is hard to generalize at all as they do vary in backspacing and could impact brake clearances or your tire clearance at full lock. I have some wheels that are serial number 30 or less like the ones below that came off Navistar MRAPs. These ones are actually good in that they are a pretty neutral offset and at least for Unimogs are very similar to the stock wheel stance.

I really like this style without CTIS. 62161 is the Hutchinson model number. Also a very neutral offset and not that heavy of a wheel.
View attachment IMG_9695.jpeg

For other Hutchinsons I really like the JLTV rims in 20x11 as they also accept an MPT bead tire which gives you other options in 365/80 and 425/75 like the AC70G. It’s sometimes hard to find good date codes of other military tires and the fact JLTVs are using 365/80r20 XZLs pretty much guarantees those will continue to be available in the future. They also have an aluminum beadlock and the whole combo weighs 15-20 pounds less than most MRAP wheel combinations. In my opinion these are the most versatile and it’s also nice that there should be a good supply of them from surplus in the future as that program is just gearing up (I believe 30,000 vehicles are currently ordered).

 

[charlieaarons]

I think my wheels on my U500 might be the 62161s (it’s on another continent). 90mm offset. Work perfectly with factory CTIS. And factory beadlocks, which is very important reason to have this type wheel.