I can't find the information I need about torquing my wheels

[debgary12]

I have looked everywhere I can think of but can't find torque information that I understand. I have a Solitude ST345GK-R-2022. It has 17.5" wheels. What I don't know is: 1) are my lug nuts long or flanged? - I don't know what that means. 2) what size socket should I use to tighten them? 3) What is the proper torque? 4) If it is 325 ft lbs as it appears to say on the GD website, what kind of tool do I need to get that much torque? Mine only goes to 150 and I don't know that I am strong enough to produce even that much. Any help at all will be appreciated.

[JRKJR]

I believe its 130-150. I know GD's manuals have had issues with this before. No way its anywhere near 325. You'll be snapping a stud or cracking a wheel going anywhere near that number.

[Yoda]

I have looked everywhere I can think of but can't find torque information that I understand. I have a Solitude ST345GK-R-2022. It has 17.5" wheels. What I don't know is: 1) are my lug nuts long or flanged? - I don't know what that means. 2) what size socket should I use to tighten them? 3) What is the proper torque? 4) If it is 325 ft lbs as it appears to say on the GD website, what kind of tool do I need to get that much torque? Mine only goes to 150 and I don't know that I am strong enough to produce even that much. Any help at all will be appreciated.

If you can remove one lug nut and check the base. If it is cone shaped then the specification is 190-210 with greased threads. I am attaching a Dexter chart that appear to be based on the wheel nuts used.

http://hltlimitedtrailers.com/wp-con...quirements.pdf

I would call GD customer service - have Vin handy or Dexter with you axle information. I am assuming you have Dexter axles. For the axle information look for a sticker on the axle tube.

As for the 350 ft lb torque wrench Amazon and other places have them, including harbor freight - just do a search

Keith

[Country Campers]

If the unit is near new there should be a sticker on the pin box stating the lug nut torque specs. I agree that it is not 325 ft pounds.

Brian

[TucsonJim]

The Dexter manual referenced above shows 5/8" wheel studs for the 17.5" wheels. However, the GDRV manual shows 9/16" studs and a different torque value. The March 2022 Grand Design Owners manual (Link below) shows the torque for the 8 lug 17.5" wheels is 130-150 ft-lb. I'd go with the GDRV values, and set the torque to 140 ft-lb if it were my rig. Even better is to check the pin box as others have said for confirmation.



Owner's Manual Link:
file:///C:/Users/15203/Downloads/Solitude%20FW_2021_OM_Rev.06.2021%20(1).pdf

Jim

[Scott'n'Wendy]

If it is cone shaped then the specification is 190-210 with greased threads.
Keith

That'd be crazy tight....unless maybe he has 3/4" studs

The below chart shows torque based on lug diameter. Dry threads. The model of trailer doesn't matter, it's the diameter of the lug and the material of the wheel. But go with Jim's post. Mine is generic..his is from GD.

[Jeff Barta]

I had the same issue. I asked the tire shop and got 140 spec. I looked at the pin box, but the number was never written on it or faded off. I don't torque truck lugs to 350.

[debgary12]

Everything seems to be based on lug size, but I don't know how to know that either! Also, I don't know what size of socket to use. What I know is that I don't have a socket that fits it snugly. Do I need a special kind of socket?

[ncitro]

debgary12 I carry this set for my torque wrench as well as my impact gun to cover me on all the lug sizes. Comes with a nice case, so I keep them under the back seat of the truck.

NEIKO 02282B 1/2-Inch-Drive Impact Socket Set, Flip Socket Set, Chrome Moly Steel, Includes 3-Inch Bar Extension, 8 Deep SAE and Metric Sizes, 5 Pieces https://a.co/d/dHz7VC2

Edit: I removed what my size is since it's different.

[TucsonJim]

Everything seems to be based on lug size, but I don't know how to know that either! Also, I don't know what size of socket to use. What I know is that I don't have a socket that fits it snugly. Do I need a special kind of socket?

I just messaged one of the Grand Design mobile response techs. He said unless anything has changed, the lug nut size for a 17.5" wheel is 13/16".

Jim

[ncitro]

debgary12 You'll need a deep thin wall to get into the recess of the wheel, and make sure it's a six point so it does not round out the nut.

[Scott'n'Wendy]

debgary12 You'll need a deep thin wall to get into the recess of the wheel, and make sure it's a six point so it does not round out the nut.

I find this annoying on a couple wheel sets I have. Some sockets won't fit in the recess. Like if they had just opened up the machining a couple mm!

[BobinICT]

For deep sockets, black impact, six point. Go find a Snap-On tool truck. SO makes some of the best thinner walled 1/2 inch drive impact sockets in the market. Reason you want black ones is they are a softer metal so when used on an impact, they won’t damage the nut. And they have a lifetime warranty.

[familytruckster4]

If all else fails get a picture of the Dexter tag on the axle and ask them. I have had good luck with them responding to requests for info. They sent me a page with all of the service and replacement part numbers for my axles as well as the torque values.

And while you have the torque wrench out you may want to retorque your U-bolts

[TedS]

I just messaged one of the Grand Design mobile response techs. He said unless anything has changed, the lug nut size for a 17.5" wheel is 13/16".

Jim

That matches a formula for nut hex size. 1.5 x Dia + 1/16. 1.5 x 1/2 = 12/16 add 1/16 and get 13/16.