Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Roland Begin on July 30, 2016, 03:39:25 pm

Title: Coach Weight
Post by: Roland Begin on July 30, 2016, 03:39:25 pm
OK. We had the coach weighed by smart weight. The left rear of the coach is 600lbs heavier then the right rear. Front of coach is within 50lbs. All my tools which are considerable are in the Joey bed and on the passenger side of the coach. Black and grey tanks were empty, water about 3/4, propane at 1/2 and we have no muffler just a straight pipe. Can't figure out why the drivers side rear is 600lbs heavier then the passenger. Only thing that comes to mind is the two 8D west cells, but six hundred pounds?

Roland
Title: Re: Coach Weight
Post by: Mike Leary (RIP) on July 30, 2016, 03:54:15 pm
Have you asked the DW?  :))  Remember, Lucy collected rocks.
Title: Re: Coach Weight
Post by: Andy 2 on July 30, 2016, 04:35:04 pm
Roland those 8 D's run about a buck and a quarter each.
Title: Re: Coach Weight
Post by: wolfe10 on July 30, 2016, 04:45:32 pm
Have you checked ride height? If the left side is higher/right side is lower than spec, it can/will transfer weight to the left side.
Title: Re: Coach Weight
Post by: lgshoup on July 30, 2016, 06:22:28 pm
When we weighed about four years ago at the Florida SEA rally we were 1000 lbs heavier on the driver's rear side. No explanation. In a hurry so didn't wait for the report just told them to mail it to us. Ride height is OK. Never have figured it out but 1000 lbs is a bunch. Front was within 100 lbs left to right.
Title: Re: Coach Weight
Post by: Caflashbob on July 30, 2016, 07:08:57 pm
At 600 to 1,000 pounds difference the tire pressure should reflect the actual load on that tire per the chart I would think.

Looked at the specific Michelin chart for my exact tires and weight without knowing left to right and I am about 2 high on the front and five on the rear at 90 rear and 100 front.
Title: Re: Coach Weight
Post by: Roger & Susan in Home2 on July 30, 2016, 07:47:23 pm
As I read the info from Michelin and virtually everyone else tire pressures should be uniform across each axle based on the highest load.  Seems like big differences from one side to the other is going to put a lot of excess stress on the axle and differential.

8Ds are about 165 lbs each.  They are tough to install.
Title: Re: Coach Weight
Post by: Doug W. on July 30, 2016, 08:05:53 pm

Well, best to be heavier on the high side then the curb side.
Title: Re: Coach Weight
Post by: wolfe10 on July 30, 2016, 08:39:36 pm
At 600 to 1,000 pounds difference the tire pressure should reflect the actual load on that tire per the chart I would think.

Looked at the specific Michelin chart for my exact tires and weight without knowing left to right and I am about 2 high on the front and five on the rear at 90 rear and 100 front.

Sorry, INCORRECT.

All tires on an axle should carry the SAME PSI BASED ON THE HEAVIER WHEEL POSITION.  Same recommendation from all tire manufacturers.
Title: Re: Coach Weight
Post by: Caflashbob on July 30, 2016, 08:43:52 pm
Sorry, INCORRECT.

All tires on an axle should carry the same PSI BASED ON THE HEAVIER WHEEL POSITION.  Same for all tire manufacturers.

great. They cannot be wrong that way.