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Thread: New guy here: wondering why folks convert to super singles?

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    Default New guy here: wondering why folks convert to super singles?

    Intros are needed first: My name is Rex and I live in Austin, TX. I'm prior military and have always had the itch to buy a deuce or such after spending some time driving them around Army bases. That and I like to buy money-sucking projects where my wife thinks I'm an idiot. So to scratch that itch, I'm looking at picking up a M923/M939/etc. but am leaning towards the versions with tandem 11.00R20's instead of super singles. From my foxhole, the 11R20s offer better road wear ability and life. Plus, if one of the tandems goes flat, I can still limp along for a while. I can't do that with super singles. My use for the truck will be ranch work (moving/hauling dirt and road base to build trails, dragging cedar/brush to burn pile, etc) so I'm thinking a dump bed conversion will be my first modification. I'm not planning to drive down rough, muddy tank trails where I think the super singles are really needed and excel in performance. When not traveling on highway to the gravel quarry 10 miles away for roadbase, etc, I'll just be on hard ball roads and hard pack trails. And I think the tandems are better for heavy hauling anyway. So, other than looks and cool factor, is there a reason to switch to super single tires? I'm assuming singles cost more to maintain and replace in general?

    PS- I love forums like this. I'm on a few car and diesel truck forums so understand the etiquette and appreciation for all the work you guys put into keeping this forum useful and social. I did a lot of searching on the forum regarding tire preferences but haven't found a good answer.

    Rex

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    The super single tires seem to be more and more common in the surplus market these days. Also they are usually taller, so you can get higher highway speeds at the same RPM's you would have with the shorter duals. Beyond that, I think it just comes down to personal preference. I prefer the 16.00 XZL's. HPIM2329.jpg

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    As Damon said the 11R20 tires in the surplus market are getting hard to find. You use to not be able to give G177s away and now they are highly sought after. He likes 1600s cause he just looks at his truck as it never moves. HA!

    As far as common place and availability as well as increase road speed you can go to an 11R22.5 or 12R22.5. It will allow you to run duals and you can get the tires at any local truck tire place. This would allow you to run a 445 65 22.5 up front for a wider steer tire. And just keep an extra rear tire/wheel for a spare cause they can all interchange. They even make a Goodyear G177 in 12R24 and 12R24.5 better take out a 2nd mortgage for a set of those puppies though.

    1600s are cheap these days, so are 395s.... If you are looking at doing mostly just farm stuff then you could modify some wheels and run dual 395/85/20s on the rear of it.


    1600s can handle more weight capacity than dual 11R20s per axle. They are just as stable as duals. G177s are rated at 6780 in dual mode x 2 = 13,560. Compared to a 1600 Goodyear AT3 and Michelin XZL are both rated at 14,540lbs.
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    Welcome to site! The other guys have the “why super singles?” covered pretty well. I have always liked the look of the big singles and they are really hard to beat off-road in a 939A2 truck with functional CTIS!
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    Just thought they looked better. My truck is just a toy for me so I put singles in it just because. Always thought that pizza cutter up front didn't look right
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    Quote Originally Posted by LCA078 View Post
    Intros are needed first: My name is Rex and I live in Austin, TX. I'm prior military and have always had the itch to buy a deuce or such after spending some time driving them around Army bases. That and I like to buy money-sucking projects where my wife thinks I'm an idiot. So to scratch that itch, I'm looking at picking up a M923/M939/etc. but am leaning towards the versions with tandem 11.00R20's instead of super singles. From my foxhole, the 11R20s offer better road wear ability and life. Plus, if one of the tandems goes flat, I can still limp along for a while. I can't do that with super singles. My use for the truck will be ranch work (moving/hauling dirt and road base to build trails, dragging cedar/brush to burn pile, etc) so I'm thinking a dump bed conversion will be my first modification. I'm not planning to drive down rough, muddy tank trails where I think the super singles are really needed and excel in performance. When not traveling on highway to the gravel quarry 10 miles away for roadbase, etc, I'll just be on hard ball roads and hard pack trails. And I think the tandems are better for heavy hauling anyway. So, other than looks and cool factor, is there a reason to switch to super single tires? I'm assuming singles cost more to maintain and replace in general?

    PS- I love forums like this. I'm on a few car and diesel truck forums so understand the etiquette and appreciation for all the work you guys put into keeping this forum useful and social. I did a lot of searching on the forum regarding tire preferences but haven't found a good answer.

    Rex
    In addition to what the other guys have mentioned the 1100's absolutely suck on the steer axle in soft ground. If you're loaded, you feel like you're going to roll the 1100 off the rim or sink it to the axle in anything that isn't pavement or packed gravel. 1200's or 395's are probably the best choice. With 1200's you can still run duals.

    I've also seen quite a few blown out 1100s that looked to be in great condition and weren't that old. I think it's because they hold a lot more heat due to being tubes and there closer to max load on the front axle. Super singles are tubeless.


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    4 Star General m715mike's Avatar
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    Rex - Quick side track.... Welcome to the site, and thank you for your service.

    I see you are in Austin. Can you join us at the rally in March? There are details here >>>

    https://www.steelsoldiers.com/showth...54#post2185754



    Okay, back to tires. I like the way my truck looks with 395’s.
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    Do both. 1100 duals in the rear and super single fronts.
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    AAAhhh. Top speed, surplus availability, and off road steering are pretty good reasons to go with super singles. I'm assuming that means a complete set of wheels too, right? We'll have to see what becomes available in the local market but I wanted to walk in with some knowledge of this gotcha's I should watch out for. Obviously I need a lot of catching up to do in the knowledge department but I can tell I'm in good hands here. Is there a good thread or sticky about the various types of wheel/tire combos?

    As for the rally, I'll mark it on my calendar. Would be great to walk around and get first hand info about all the different types of trucks, engines, axles, etc. I'm just starting to scratch the surface.

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    Quote Originally Posted by simp5782 View Post
    As Damon said the 11R20 tires in the surplus market are getting hard to find. You use to not be able to give G177s away and now they are highly sought after. He likes 1600s cause he just looks at his truck as it never moves. HA!

    You got me there, No one else moves their truck as much as you do Wes. ALL trucks looks like they never move compared to yours. LOL Although yours does look good on the 16.00's

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