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I just bougght a 2002 Winnebago Minnie, c class, Ford 450…

I just bougght a...

I just bougght a 2002 Winnebago Minnie, c class, Ford 450 chassis and it rides very rough, too stiff, bouncy. Has new Sears tires with 80 pounds pressure. Is it safe to reduce rear dually pressure to 70 pounds, or lower?

Mechanic's Assistant: Is the tire cold or warm? And are you using a decent pressure guage for the reading?

Cold, and good pressure gauge. has tire pressure equalized showing pressure and used high quality gauge too.

Mechanic's Assistant: What year is your F450?

2002

Mechanic's Assistant: Are you fixing your F450 yourself? What have you tried so far?

No, not mechanically gifted, haven't tried anything. Previous owner was master mechanic, said ride it typical but on slightly imperfect roads there are preet severe vibrations and roughness.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Ride is good on very smooth surface, could rear air suspension be problem? Was told it had been replaced.

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Answered in 5 minutes by:
9/17/2017
Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 12,529
Experience: RVDA/RVIA Master Certified Technician with many years experience.
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Hi! My name is ***** ***** I can assist you with this. I may need some additional information from you first in order to give a complete answer.

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Yes, you can lower the pressure. This is a matter of choice to a large part. Ride may be softer, but you usually sacrifice some wear on the mileage. You might look into the air setting as most are adjustable and some better quality shocks in the front like Bilstein or Koni units. That should help the ride smooth out and not be so harsh. Hope that proves helpful here. Please get back to me if you need more as there is no time limit for follow ups and all are covered in our one time fee.

Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 12,529
Experience: RVDA/RVIA Master Certified Technician with many years experience.
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Customer reply replied 5 months ago
How would I check to see if rear air settings are adjustable? Previous owner, who was credible, said he had replaced rear air suspension but not front, that front seemed ok without air suspension. The harshness does come from rear and is very dependent on road quality, slightest road imperfections produce harsh vibration.
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Randall
Randall
Randall, RVIA Certification
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