BH 358RL Wheel Stud Size

For20hunter

Pacific Region Directors-Retired

• Feb 7, 2013

• #1

Can anyone tell me whether I have the 1/2" or the 9/16" studs for my wheels on my 2013 Bighorn 3585RL with the 7000 lb. axles? I am ordering some new 17.5" wheels and tires to replace the China Bomb (TowMax) tires and stock wheels that came with my fifth wheel before I have some type of epic tire failure that I have been reading about, from a tire shop online in Edon Ohio and they need to know which wheel studs I have. The socket size for the lug nuts on the fifth wheel are 7/8" or 22 mm. Thank you in advance for your help with this.

 

jnbhobe

Well-known member

• Feb 7, 2013

• #2

They would be 9/16 studson a 7K axel.

 

For20hunter

Pacific Region Directors-Retired

• Feb 7, 2013

• #3

jnbhobe said:

They would be 9/16 studson a 7K axel.

Click to expand...

Thanks for your quick reply Jon! I was almost certain that they were the 9/16" but I just wanted to make sure since shipping is $235.00 each way for the 5 wheels and tires.

Rod

 

TXBobcat

Fulltime

• Feb 7, 2013

• #4

I would be sure if I were you.. Take one of the lug nuts off and go to a tire store and check it. Or go to a hardware store and check it if you can...

I changed out my axles for IS which has a 7k axle. Check your axle and see if it is 6k or 7k..

FWIW
BC

 

For20hunter

Pacific Region Directors-Retired

• Feb 7, 2013

• #5

TXBobcat said:

I would be sure if I were you.. Take one of the lug nuts off and go to a tire store and check it. Or go to a hardware store and check it if you can...

I changed out my axles for IS which has a 7k axle. Check your axle and see if it is 6k or 7k..

FWIW
BC

Click to expand...

Bob,

I checked the build when we first got it and it says that it has the 7000# axles, just doen't mention the wheel stud size anywhere.

Rod

 

caissiel

Senior Member

• Feb 7, 2013

• #6

Use a socket to check stud diameter. It's either
1/2 or 9/16 in.

Sent from my SPH-M910 using Tapatalk 2

 

For20hunter

Pacific Region Directors-Retired

• Feb 8, 2013

• #7

caissiel said:

Use a socket to check stud diameter. It's either
1/2 or 9/16 in.

Click to expand...

How accurate is that? The 1/2 socket does not fit over the stud but a 9/16 socket does. A half in drill bit seems pretty snug in the lug nut, but of course that does not take into account the depth of the threads.

 

jnbhobe

Well-known member

• Feb 8, 2013

• #8

If it takes a 13/16th socket its 1/2in, if its 7/8th socket its 9/16th.

 

mattpopp

Trouble Maker

• Feb 8, 2013

• #9

Isn't it stamped on the rim or lug nuts? I remember seeing it some where's in that area when swapping my 16's out for the 17.5's.

I have dexter 7k axles with 9/16 studs. If you are unclear if you have 6k or 7k axles. The quick way to check is to see what color the power wire is going into the drums. Black = 7k. White = 6k axles (Dexter). Not sure if that is true on kippers axles.


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Ray LeTourneau

Senior Member - Past Moderator

• Feb 8, 2013

• #10

My older Bighorn came with 6k axles and 9/16 studs using a 13/16 deep socket. I've since upgraded to 7k axles but still have the same size studs. For what it's worth, I had trouble finding a replacement lug nut. I did find one but it took some searching.

 

For20hunter

Pacific Region Directors-Retired

• Feb 8, 2013

• #11

It takes a 7/8 socket. I ended up removing one wheel and saw that the backside of the wheel is marked and stamped, but at that point I just mic'd the studs to confirm that they are 9/16. A short time later, Heartland customer service called me back and confirmed what Jmbhobe said in his first comment that all of their 7000# axles have the 9/16 studs. Thank you everyone for your help and suggestions on this. I just didn't want to order my new wheels and tires and get them shipped just to find out they were not the correct ones! No I am looking forward to getting the new wheels and tires on the Bighorn and getting rid of these TowMax's.

Rod Ditrich

 

L

lwmcguir

Well-known member

• Feb 9, 2013

• #12

The same wheels pretty much work on 1/2 or 9/16 studs. When you go on up to 5/8" and larger then you have to be careful of having the correct wheel. Best place to get hardened replacement lug nuts is on line.

 

mattpopp

Trouble Maker

• Feb 10, 2013

• #13

Shouldn't judge the size of the stud by the size of the socket that fits the lug nut. You can get two or three different lug nuts that fit a 9/16" stud that use various size of sockets.


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For20hunter

Pacific Region Directors-Retired

• Feb 10, 2013

• #14

mattpopp said:

Shouldn't judge the size of the stud by the size of the socket that fits the lug nut. You can get two or three different lug nuts that fit a 9/16" stud that use various size of sockets.


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Click to expand...

That is exactly why I removed the wheel and mic'd the studs just to be sure. However, Heartland called me back and said that all 7000# dexter axles that they use have the 9/16" wheel studs, so unless they have been changed, that is a good rule of thumb to use.

Rod