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Topic: Tire pressures for rear duallies. (Read 214 times) previous topic - next topic
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Tire pressures for rear duallies.
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?
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264
Re: Tire pressures for rear duallies.
Reply #1 –
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
2003 MB
Re: Tire pressures for rear duallies.
Reply #2 –
All tires on the same axle should be inflated to the same pressures. I agree with Rich that the “highway curvature” theory is nonsense.   ::)
2003 TK has a new home
Re: Tire pressures for rear duallies.
Reply #3 –
Quote from: rich  - 
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.
Steve and Jill, Steve posting
1999 26.5 Mid-Bath
Re: Tire pressures for rear duallies.
Reply #4 –
There are a lot of things on the LD FB pages that are nonsense
Don & Dorothy
Sold our LD in June of 2023

Our boring always non-PC travel blog
Traveling Dorothy
Re: Tire pressures for rear duallies.
Reply #5 –
Quote from: Don Malpas  - 
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!
Greg & Victoria
2017 Mid-Bath  “Nocona” towing a manual 2015 Forester
Previously a 1985 TK
SKP #61264
Re: Tire pressures for rear duallies.
Reply #6 –
Quote from: Don Malpas  - 
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
personal fine art photo stuff
TF Mack | Flickr
It's all good .......
2014 Twin King
 
Re: Tire pressures for rear duallies.
Reply #7 –
Quote from: Don Malpas  - 
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
Joel & Terry Wiley
dog Zeke
2013  31 IB   Orwan   / 2011 CRV Tow'd LWEROVE