Singling out a m917 dump

[Abrant23]

I've been scouring the forum and have found a few answers, but I would like to know what I need to do in order to put a set of 16.00r20's on my m917.

HEMTT rims? Grinding front drums? Do I need the runflat inserts or tubes in these tires? Bead locks? I've seen some different suggestions in different threads and just want some clarification before I start spending $$$$

Any info would be appreciated.

 

[R Racing]

Yes hemmit rims. Yes need to clearance the 2 front drums. Don't need run flats unless you want to. It's the same as doing it on a m917 and m920. The only concern I'd have is overall height. But it has been done before, and it does seem to help with float and traction.

 

[Abrant23]

Do you know if the wheel studs will have to be replaced with longer ones due to the thicker rims?

 

[CBR Metalworks]

http://www.steelsoldiers.com/showthread.php?117950-CBR-Metalworks-M920-hauler-Mad-Max

That shows some of the grinding needed on the first page.

You can also run 16r21 tires/wheels and you don't have to do any grinding of the front drums. You do not need to put longer studs on.

 

[porkysplace]

I've been scouring the forum and have found a few answers, but I would like to know what I need to do in order to put a set of 16.00r20's on my m917.

HEMTT rims? Grinding front drums? Do I need the runflat inserts or tubes in these tires? Bead locks? I've seen some different suggestions in different threads and just want some clarification before I start spending $$$$

Any info would be appreciated.

I would check with your local D.O.T. before grinding the drums ,most likely won't pass inspection . Could also be a liability issue if there is a accident The manufacturer built the drums that size for a reason.

 

[CBR Metalworks]

You can also run 16r21's on the front axle and 16r20's on the rear. I haven't measured the tires but I think they are the same size (or within an allowable difference)

Just so happens I have two wheels for sale, haven't even listed them yet. They have tires on them but they have been run flat so tires should be considered no good.

 

[Abrant23]

How difficult are the tires to find? Only problem I can see is having to have two different sized spares. I guess if a front went down I'd just have to call roadside assistance. The truck will be used off road 80% of the time anyways.

 

[CBR Metalworks]

I know a guy about an hour away from me that said he has some tires. If I find some cheap tires I will probably keep them for possible future m916 - m920 series trucks I may purchase.

 

[Abrant23]

Dumb question, but do the 16.00r20's run tubes or are they tubeless?

 

[pctrans]

Tubeless.

 

[NDT]

Has anyone put FMTV wheels on the front of the M920 M917 M916? Maybe the drum grinding would not be required since the FMTV rims are not as thick.

 

[CBR Metalworks]

FMTV and 5-ton wheels are pretty similar (almost identical best I can tell). I would not run them if for no other reason than they are not as thick as HEMTT wheels, and not rated to carry as much weight. Would be fine on a lift axle or on the rear if you don't plan on hauling much, but I wouldn't trust them on the front. I think a 5-ton wheel is rated a few thousand pounds lighter than a HEMTT wheel. Is it enough? Probably, but I am not going to try it, especially on the steer axle.

 

[Tornadogt]

I wouldn't worry about a 5-ton or FMTV wheel on the front of a M916-920 as far as strength but (they also require clearancing of the front brake drums), and the offset on them are a bit further in than the HEMTTs so they track a bit narrower. HEMTTs on the rear track a bit to narrow. 5tons/FMTVs on the rear it will track wider than HEMTTs.. My opinion the best combo is HEMTT's on the front and 5-Tons/FMTVs on the Back, that will get the wheel track (front to rear) as close as it can be. Use a HEMTT wheel for the spare and it will fit anywhere on the truck.. This is just my opinion do what you think is best.

 

[Abrant23]

Finally got the tires on the wheels and then on the truck. This thing is a beast. Fyi, overall height is only 12'-6"

 

[dawico]

Looks good. Very nice truck you have there.

 

[av8or]

Before you add a winch check the front axle weight with the tag up, you may not want to add any more weight.

 

[86m1028]

I would check with your local D.O.T. before grinding the drums ,most likely won't pass inspection . Could also be a liability issue if there is a accident The manufacturer built the drums that size for a reason.

The part I had machined down you can not see unless the wheel is removed.

NOTE: I DO NOT run down the road loaded to the max in my M916.

 

[Abrant23]

The winch would be used only in off road/recovery applications. I was hoping to come up with a bolt on solution that could be removed the 5% of the time the truck was driven on the road. I tend to get equipment stuck in the swamp a whole lot and would love to use the truck as a winch/anchor.

 

[CBR Metalworks]

I ran 16r21's on the front and 16r20's on 5-ton wheels on the rear of the M919 I recently singled out, overall width pretty much matches dead on, looks much better than the HEMTT wheels front/back on my M920, rear is quite a bit narrower than the front.

Sure was nice to not have to grind on the brake drums, that is something I never want to endure again...

 

[Kickin]

Did the 16r21 military rims fit without any mods on the M919? I am trying to single the M920 which has the same wheels originally on the m919.