Trailer wheel size?

I am considering bidding on a couple of trailer mounted generators which appear to have low tires in the photos, I was wondering if anyone knows what size wheels / bolt pattern the following trailers use, so I could see if I have the right size laying around to use for potential pick up, as this may effect how much I am willing to bid.:

M103A3 (appear to be 6 lug, but I don't know size or bolt circle)

M116A2 (can't tell much in the photos other than one is nearly flat)

thanks Ike

M103A3 (appear to be 6 lug, but I don't know size or bolt circle)

M116A2 (can't tell much in the photos other than one is nearly flat)

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M103A3 - I do believe are the same wheels as on the M35 Deuce, M105 trailers, etc.

M116A2 - is standard GM pickup truck 8-Lug bolt pattern.

...

number 9,
it is not only the 8 bolt GM pattern, it is also used by Ford, Chrysler for it is a US standard pattern.
To add something: The tire size should be 235/85R16 LR E for the M116A2.
The M103 / M105 trailers use 9.00-20 tires.
Wolf

Wolf.Dose said:

number 9,
it is not only the 8 bolt GM pattern, it is also used by Ford, Chrysler for it is a US standard pattern.
To add something: The tire size should be 235/85R16 LR E for the M116A2.
The M103 / M105 trailers use 9.00-20 tires.
Wolf

Click to expand...

Not quite correct Wolf,

Ford in 1997 changed the bolt pattern for their trucks to something different. Previously they were 8X6.5inch, in mid year 1997 the went to 8X170 mm.

This chart from a big off road wheel company shows when the major changes in bolt circle and lug sizes changed.

55-79 F-250 / F-350 4WD 8 on 6.5 in. 9/16 OR 1/2"
55-79 F-250 / F-350 2WD 8 on 6.5 in. 9/16 OR 1/2"
80-98 F-250 / F-350 (OLD BODY) 4WD 8 on 6.5 in. 9/16
80-98 F-250 / F-350 (OLD BODY) 2WD 8 on 6.5 in. 9/16
03-04 F-250 / F-350 / EXCURSION 4WD 8 on 170 mm 14X1.50
03-04 F-250 / F-350 / EXCURSION 2WD 8 on 170 mm 14X1.50
99-02 F-250 / F-350 / EXCURSION 4WD 8 on 170 mm 14X2.00
99-02 F-250 / F-350 / EXCURSION 2WD 8 on 170 mm 14X2.00

OK, I do not work on this modern stuff. So I did not catch that change. I think, that is an acceptable excuse. The Ford truck I had to deal with so far was the standard 8 bolt pattern.
Wolf
By the way, GM inverted the 7 pin recepticale new, beside there is an ISO standard on that. Only GM used their stupid system. The rest of the world can not used their stupid recepticale. And in Europe we changed to a 13 pin recepticale some years ago (adapters to 7 pins are available for little money). Why GM did not go on that? It is also ISO standard.

I was thinking about beefing up the rims on my M116a2 to accommodate 18 inch tires. Not sure if it's recommended to deviate from the standard 16 inch rims/tires?

Here's GM wheel fit-up to my M116A3: https://www.steelsoldiers.com/showthread.php?181242-M116A3-with-2000-GMC-1-Ton-Van-Wheels


Here are the wheels and new tires mounted on an M1101.......HMMM, just noticed how old the original post is.....

Thanks for pointing me to a newer thread. I didn't realize how old it was until you mentioned it! The tubs on the M1101 look considerably larger than the ones on my M116a2

Here are a couple alternatives.

First two pictures are the 6 lug bolster/M1061 wheel with 12.5R16.5 on an M105 axle and the other 2 are 16" Ford truck rims. The 8 x 6.5 on the Ford is the same as 8 lug Dexter axles. Go to Etrailer for a huge selection already mounted.

I get mine from the auto salvage yard from 3/4 ton or one ton Fords, including vans. My friend charges me one tire and one rim for $50. Tires are all 80psi. There is a huge variation in size tire available for 16" at the salvage yards.

The last photo is tandem Dexter (8x6.5) modified for the 16.5 HMMWV wheels and tires. The tires that fit 16.5 are not very common but the tire shop had someone put new ones on his truck, so he gave me the old one ones (2" shorter than 37"). You can see in that last photo is different size than the 37" HMMWV....but they work around here until I get newer (37").

Edit....I see the 116 has the HMMWV size tires originally.

Thanks for the valuable info! This is what's on it now. I visited a salvage yard a couple weeks ago to price out some new rims and I was quoted $15 each for Chevy van rims with the 8 lug pattern. The trailer pulled fine the entire 2 hour drive home on highway and local roads without a load. Once it warms up and dries out I'll be going over the trailer top to bottom. I was just curious if there's room to upgrade the rims from the standard 16 inch and move up to 18 inch without any tire rub. I don't plan on taking it off road on insane terrain. I just figure if there's more meat underneath it'll ride even smoother. I could be wrong and should stick to factory specs but that's why I'm here asking questions.

37 x 12.50 R16.5LT tires are standard on my 2 trailers. Looks like someone has already replaced the military tires with civilian on yours.
My original tire is the one laying on the ground in this pic. Also, military tire is mounted on opposite side of my trailer.
https://www.steelsoldiers.com/attachment.php?attachmentid=739591&d=1535394631

The ones on mine are LT 235/85/r16 E load civilian tires. They're fine for what I'll be using it for but I was hoping to upgrade to something wider since that rim is sketchy and I'd like to replace it anyway

TeeWhy said:

The ones on mine are LT 235/85/r16 E load civilian tires. They're fine for what I'll be using it for but I was hoping to upgrade to something wider since that rim is sketchy and I'd like to replace it anyway

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That's the correct size tire since your trailer is an m116a2 (m101a2 with the cargo bed). The m101a3 versions and the later aluminum trailers had the bigger HMMWV tires stock. You can run some wider tires if you want to, there should be enough room. I had 36x12.5x16.5 tires on one of my m116a2 trailers without issues.

I replaced the shocks on my trailers and it made a huge difference in the ride.
Much smoother!
The old shocks were completely shot.

I have stock rims and tires on both.
E rated.

If you go with a HMMWV tire or similar, it will raise the trailer up a few inches.
Makes reaching for something inside trailer more challenging sometimes.