Coach Weight/Tire Pressure
Just had opportunity to weigh my coach.
Here's what I have with Full Water/Fuel & Empty holding tank....
Front Axle - 14,806
Rear Drive & Tags - 29,480
Total 44,286
Prevost Placard says the following:
Front Tires - 7,500 Each @ 120 PSI = 15,000 Lbs
Drive Tires - 4,635 Each @ 80 PSI = 18,540 Lbs
Tag Tires - 5,545 Each @ 80 PSI = 10,910 Lbs
Total 44,450 lbs
My Tires - Michelin XZA-1 are rated as...
Single 9,090 Lbs @ 130PSI
Dual 8,270 Lbs @ 130PSI
or
Steer Axle = 15,220 @ 110PSI
Drive Axle = 24,280 @ 90PSI
Tag Axle = 13,340 @ 90PSI
Total 52,840 Lbs
Question is - Since tires can safely handle loads larger than what I'm currently running, can I load the coach above the Prevost ratings? How much more load can the coach safely carry?
Lee
FYI on 45' axle weights, etc.
I have a 97 Country Coach 45' XL. Prevost manufactured this vehicle on 4-1996.
I weighed the coach yesterday with full fuel, 1/4 tank fresh water and empty holding tanks. The lower compartments have the normal junk, including a small refer and a 120V compressor and associated equipment. The steer axle weighed 14,060, and the combination of the driver and tag axles weighed 31260.
In a dash compartment is a placard from Prevost and Country Coach. I have Michelin 3.15 80R 22.5 XZA2 Energy tires. My steering axle is rated 14,660, the drive axle duals are rated at 26,180 and the tag is rated 14,380. The coach GVWR is 47,000. I have my steering axle inflated to 120# (that's why I carry the 120V compressor) and I have all of my rear tires at 100#.
I know these pressures are a little high, however, the tires are rated to 130# cold. As a former long-haul truck driver (like 40 years ago) I would rather have a harsh ride rather than a blown steer axle tire. I am not over-inflated on any axle and maintain a 2,000 lb margin between the tire rating and the actual axle weight of my rig. Some might argue with this theory but it works for me. Any input to the contrary is welcome.
I hope these weights help some of those with similar coaches but it is really best to get each individual bus weighed.
Incidently, my 2001 Honda CR-V weighs 3,440 and that is only because I restricted my wife Martha to 1 1/2 hours at the Denio Flea market in Roseville, CA yesterday!