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Old 04-04-2014, 12:46 PM   #21
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The front and the two outer rears are Aluminum Alloy rims. The inner rears are the old painted steel. There are stainless covers over the lugs and they cover them with that and the Stainless fake lugs. Take off the fake lugs and cover and the real lug nuts are exposed.
I have attached a actual weight for my 2012 378.
Fully loaded including EVERYTHING!!! (DW and 80 lb Lab) pulling the 4 down SUV.
All axle weights.
I also attached the Michelin Tire pressure loading graph for the tires.
XRV 235 80 22.5 tires
I keep my rig at 92 for better handling and fuel consuption.
I tried 100 psi but the ride is too harsh.
The Excel has a chart with blue pointers where the actual weights per tire are.
The green pointers are the max loads at 92 psi where I keep the tires.
At 92 psi the rear tires have 600 pounds of extra capacity and the fronts have 700 lbs. (Multiply x 2 for the axle capacity)
Attached Files
File Type: pdf Gtown 378 Tire Loading.pdf (78.4 KB, 54 views)
File Type: pdf Gtown 378 Weights.pdf (158.0 KB, 44 views)
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Old 04-04-2014, 01:43 PM   #22
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Originally Posted by 43D18 View Post
Iggy, looks like you have alloy wheels (nice) not the fake "hub caps" which require removing the 3 three fake lug nuts.

On our GT 351, the sticker calls for 92psi all the way around, and that's what we run.

The picture is not my wheels but was showing the cap removing tool.
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Old 04-04-2014, 01:47 PM   #23
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Originally Posted by Iggy View Post
The picture is not my wheels but was showing the cap removing tool.
Ah, got it.

Well, both the wheels AND the cap removal tool are much nicer than mine, whosever they are.

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Old 04-04-2014, 01:58 PM   #24
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Originally Posted by intercept View Post
The front and the two outer rears are Aluminum Alloy rims. The inner rears are the old painted steel. There are stainless covers over the lugs and they cover them with that and the Stainless fake lugs. Take off the fake lugs and cover and the real lug nuts are exposed.
I have attached a actual weight for my 2012 378.
Fully loaded including EVERYTHING!!! (DW and 80 lb Lab) pulling the 4 down SUV.
All axle weights.
I also attached the Michelin Tire pressure loading graph for the tires.
XRV 235 80 22.5 tires
I keep my rig at 92 for better handling and fuel consuption.
I tried 100 psi but the ride is too harsh.
The Excel has a chart with blue pointers where the actual weights per tire are.
The green pointers are the max loads at 92 psi where I keep the tires.
At 92 psi the rear tires have 600 pounds of extra capacity and the fronts have 700 lbs. (Multiply x 2 for the axle capacity)

Thanks for the information.
I do need to hit the CAT scale at least once when I'm fully loaded.
90-92 psi all around seems right for our 2012 378TS model.
When you weighed did you have a full tank of fuel and all your stuff inside?
Did you have a full tank of water, grey and black tanks full or empty?

Iggy
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Old 04-04-2014, 02:07 PM   #25
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Thanks for the information on the tire pressure, mine came from the dealer last year when we picked it up at 87 psi all the way around. Drove that all last year did have some wondering MH. This year change them all to 92psi and handles a lot better, can't believe couple of pounds make that much diffrent.
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Old 04-04-2014, 02:15 PM   #26
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I couldn't believe it either. I guess every tiny bit counts from sway bar, alignment, and tire pressure.
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Old 04-04-2014, 02:36 PM   #27
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Fully overloaded, returning from vacation. Half on all of the Coach tanks and full tank of gas on the car with bikes etc in it which should be a good number for most. 420 pounds of people and dog.
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Old 04-04-2014, 06:37 PM   #28
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I just found my Michelin tire catalog which has a great table, tire weight to psi.I have XRV tires 235/80R/22.5 tires and found that the front single tire weight and the rear dually weight.
Read Page 14 for XRV tires 22.5 235/80R/22.5
Hope you can read it.
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File Type: pdf Michelin.pdf (3.45 MB, 47 views)
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Old 04-04-2014, 08:02 PM   #29
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This chart only gives you the max pressure load
You may find the chart I plotted more useful which is the Michelin load/pressure variations over all ranges of load and pressure that the GT is operated at not just the max
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Old 04-04-2014, 09:26 PM   #30
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I keep my fronts at 100 and my dualies at 96.Its better to be a little over than under.Whatever you do, make sure that the dualies are all exactly the same.
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Old 04-05-2014, 07:51 AM   #31
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I keep my fronts at 100 and my dualies at 96.Its better to be a little over than under.Whatever you do, make sure that the dualies are all exactly the same.
Agree, makes sense.
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Old 04-06-2014, 07:07 AM   #32
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2013 350XL.....I had 4 wheel weight done and results are:
Front driver side - 93.5lbs
Front passenger side - 93.0 lbs
Rear driver side - 88.5 lbs
Rear passenger side - 87.0 lbs

After 4 wheel weight, coach tracks straighter, rides smoother and better fuel consumption (albeit very very minor). Had the weights done at an FMCA rally. Highly recommend those rallies.
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Old 04-08-2014, 09:26 AM   #33
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At the suggestion of a group member in this forum I purchased a tire pressure monitor in December, and I LOVE it. It is mounted on the dash and while driving it continually scrolls through the pressures of each tire as well as the temperature. If one ever gets low an alarm goes off. I set all tires of my 337xl to 90 cold. they vary according to temperature up to as high as 107, but all stay within 1-2# of one another
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Old 04-08-2014, 11:28 AM   #34
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At the suggestion of a group member in this forum I purchased a tire pressure monitor in December, and I LOVE it. It is mounted on the dash and while driving it continually scrolls through the pressures of each tire as well as the temperature. If one ever gets low an alarm goes off. I set all tires of my 337xl to 90 cold. they vary according to temperature up to as high as 107, but all stay within 1-2# of one another
X2

Many people are unaware that tire pressure increases as the tire warms up.
90 psi will easily increase to 100 plus psi when on the road.

I love my tire monitor while driving. Keeps me aware if something is happening or wrong.
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