Community Forums

StuartS · 02-20-2018, 09:42 PM

Have a four corner weigh done on your coach. Other wise you are just guessing.

Had our 2017 4369 DS fully loaded & four corner weighed at Factory Pick Up at Newmar. I run 110 on the front (fronts are 365's) & 85 on the drive axle & tag.

FLJOE · 02-21-2018, 05:13 AM

Quote:

Originally Posted by StuartS

Have a four corner weigh done on your coach. Other wise you are just guessing.

Had our 2017 4369 DS fully loaded & four corner weighed at Factory Pick Up at Newmar. I run 110 on the front (fronts are 365's) & 85 on the drive axle & tag.

I have the same year and floor plan, except a Ventana. I assume you were loaded for travel and not just picking up a new empty unit when you have the 4 corner weight done?

sheridany · 02-21-2018, 07:43 AM

That is correct it was not an empty coach. We are not FT but we filled up with DF and 1/2 tank of water prior to the weigh and the personal belongings are packed throughout the coach.

This thread has been really interesting as I did not know the tag pressure could be adjusted to shift the weight around the axles. I would certainly like to know more about that and how do you go and check the tag pressure?

Also, the links that 007 provided are full of good information that I did not find in my initial search along with all the responses to this posting.

Scottybdivin · 02-21-2018, 07:48 AM

With the 315/80 XZA-2 Michelins the minimum pressure is 85 PSI. It is good for up to 12830 for singles and 23360 for duals. This is sufficient for most tag axle coaches with this size tires.

cruzbill · 02-21-2018, 04:20 PM

The tag is adjustable on my 2005 Beaver. I've heard that newer coaches may use a 'proportioning' valve on the tag and therefore the tag is not adjustable. Check w/ your chassis mfg. Sorry if I caused any confusion.

2ndramtd · 02-21-2018, 08:11 PM

Quote:

Originally Posted by FLJOE

I agree, on a regular CAT commercial scale it is hard to weigh correctly. The best position I could find on the scale showed my duals as 22,020 and my tag as 2,860. I'm not about to keep 65 or 70 psi in those tag axle tires.

I will get a 4 corner weight at some point this spring while hooked up to my enclosed loaded trailer, then I will have the perfect information for inflating my tires.

When I weighed my Dutch Star, I had just sold my house and put a lot of stuff in it. The instructor gave specific directions on approaching the pad; lined up for 100 feet, straight on with no backing up. I believe your tag weight is just tag weight with no coach weight at all.

Belonging to Escapees allows me to get my coaches weighed properly, once in Florida and this time in Arizona. Worth driving some distance for, IMHO.

Dar

StuartS · 02-21-2018, 08:29 PM

Quote:

Originally Posted by FLJOE

I assume you were loaded for travel and not just picking up a new empty unit when you have the 4 corner weight done?

Yes we were loaded for travel right out of the gate with everything from 2 sets of golf clubs, barbecue grill & tank to an On The Go double size water softener. Everything we would need for the next 16 weeks.

And prior to Newmar doing the 4 corner. Newmar also filled the fuel tank & water prior to putting it on the scales.

FLJOE · 02-22-2018, 06:17 AM

Quote:

Originally Posted by 2ndramtd

When I weighed my Dutch Star, I had just sold my house and put a lot of stuff in it. The instructor gave specific directions on approaching the pad; lined up for 100 feet, straight on with no backing up. I believe your tag weight is just tag weight with no coach weight at all.

Belonging to Escapees allows me to get my coaches weighed properly, once in Florida and this time in Arizona. Worth driving some distance for, IMHO.

Dar

I have went across the CAT scales twice in the last 3 months at a local Love's. Once without my enclosed and once with it. Never had instructions, just lined up, drove on, got out to check position, and let them know inside. But you are correct, the 4 corner weight is the best way to go.

What did they weigh your tag at?

2ndramtd · 02-23-2018, 06:46 AM

FLJOE,

I tried weighing at a landscape outlet and it was a hassle. The ladies had no clue even after I drew several diagrams, I ended up with a tag weight almost identical to yours. Three months later at Escapees park in Congress, AZ it got weighed correctly. My tag was about 8800. Exact numbers are in coach in Phoenix, I'm in Virginia for a few more days. Tag axle pressure adjustment is the first thing that comes to our minds!

Dar

Stuart W · 02-23-2018, 07:37 AM

As my 4369DS left the factory the tags were at
LT 4,330 RT 4,295
LD 7,895 RD 8,115
LF 8,520 RF 8’115
As you can see taking All 3 rear tires on a side and averaging can be very off in my opinion.
Question: if adding air to the tag can effect the fronts, what end would you check first? After all if I do the fronts first the tags would need less and the other way, the tags first the fronts would need less, right?

If you haven’t done so already, call Newmar Customer Service, they will you provide you with the weights as it left the factory.