Lazy Daze Owners' Group

Lazy Daze Forums => Lazy Daze General Info & Discussions => Topic started by: HiLola on February 05, 2021, 10:52:33 pm

Title: Tire pressures for rear duallies.
Post by: HiLola on February 05, 2021, 10:52:33 pm
Please settle a question: My understanding is that the dual tires should be equal in pressure, however someone on the Lazy Daze fb page states the inside tire should be 3 lbs less due to highway curvature.  Which is correct?
Title: Re: Tire pressures for rear duallies.
Post by: rich on February 05, 2021, 11:04:32 pm
Quote from Michelin, page 5

https://www.michelinb2b.com/wps/b2bcontent/PDF/RV_Tires_Brochure.pdf

--------
Tire inflation pressures should be maintained across
an axle at the same inflation pressure, especially in dual
fitment. Make sure to check both tires in a dual fitment;
pressures should be the same. The maximum allowable
difference between tires across an axle is 5 psi
----

I suppose you could make a tortured case that 3psi less is acceptable, but I would aim for the the same.

The road curvature thing makes no sense, as it depends on which road you're on, and even differs between lanes on the same road. 

The inside tire can heat up more, which can result in a higher running pressure.  That's also addressed in the Michelin booklet.

Rich
Title: Re: Tire pressures for rear duallies.
Post by: Joan on February 05, 2021, 11:58:00 pm
All tires on the same axle should be inflated to the same pressures. I agree with Rich that the “highway curvature” theory is nonsense.   ::)
Title: Re: Tire pressures for rear duallies.
Post by: StevenJill on February 06, 2021, 07:53:03 am
as it depends on which road you're on, and even differs between lanes on the same road. 


Rich


Yeah, on 4 or more lane roads and many other roads you may not see the curvature, I would think.
Title: Re: Tire pressures for rear duallies.
Post by: Don Malpas on February 06, 2021, 08:15:54 am
There are a lot of things on the LD FB pages that are nonsense
Title: Re: Tire pressures for rear duallies.
Post by: HiLola on February 06, 2021, 08:29:06 am
There are a lot of things on the LD FB pages that are nonsense

I’ve been starting to notice that, Don. That’s why I always come back here to get a sanity check!
Title: Re: Tire pressures for rear duallies.
Post by: colddog on February 06, 2021, 10:33:23 am
There are a lot of things on the LD FB pages that are nonsense

<smile> What !!!!  And I thought if its 'written' down it must be true.  My mother always said 'nothing is self validating'. 

glen
Title: Re: Tire pressures for rear duallies.
Post by: joel wiley on February 06, 2021, 11:20:57 am
There are a lot of things on the LD FB pages that are nonsense
I suspect that the nonsense  on the "LD FB " has more to do with the FB part than the LD part.
JMNSHO
Joel