RV.Net Open Roads Forum: Class A Motorhomes: Newmar Ventana LE Recommended Tire Pressures

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Class A Motorhomes

Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Newmar Ventana LE Recommended Tire Pressures

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Sponsored By:
HighwayJunky

Kissimmee

Full Member

Joined: 05/31/2003

View Profile


Offline
Posted: 07/13/19 09:14am Link  |  Quote  |  Print  |  Notify Moderator

Running Michelin tires 275/75R22.5. Listed pressures seem high to me at 130PSI in Front and 120 PSI on rear...Is there an opinion as to what weights are best both for smooth driving/safety and diesel mileage??

Presently actual pressures on the unit vary from 105-120....Comments appreciated...


2017 Newmar Ventana LE Diesel Pusher
2012 Fiat Pop Toad
One wife
No pets
No complaints
No Worries (except keeping wife happy!!)
Fulltime jobhttps://www.rv.net/SharedContent/cfb/images/rolleyes.gif

fyrflie

Martinez, CA. USA

Senior Member

Joined: 07/31/2003

View Profile



Good Sam RV Club Member

Offline
Posted: 07/13/19 09:54am Link  |  Quote  |  Print  |  Notify Moderator

Pressures listed in RV are maximum pressures.
The only way to know the correct pressure is to weigh the RV then use Michelin’s inflation table to determine correct pressure.

When you weigh the RV, you need the front axle weight and the rear axle weight. Then calculate pressures accordingly.
With my RV, it worked out that all my pressures on all tires are the same which makes it easy to remember, but your results may be different.

Bill.Satellite

Full-timer

Senior Member

Joined: 12/25/2012

View Profile



Good Sam RV Club Member


Posted: 07/13/19 10:36am Link  |  Quote  |  Print  |  Notify Moderator

The above post is correct other than you should actually try to get each wheel weighed for an accurate determination of tire pressure. If you are just weighing front and rear you can use the Michelin pressure guide but you should add 5# to try to accommodate one side being somewhat heavier than the other. No one on the forum can tell you the correct pressure. No one. You must know the RV weights before making any adjustments. Never exceed the pressure listed on the tire sidewalls and be sure your tires are cold when you set the pressure.


What I post is my 2 cents and nothing more. Please don't read anything into my post that's not there. If you disagree, that's OK.
Can't we all just get along?

FloridaRosebud

Melbourne

Full Member

Joined: 05/27/2018

View Profile


Offline
Posted: 07/13/19 10:58am Link  |  Quote  |  Print  |  Notify Moderator

Bill.Satellite wrote:

The above post is correct other than you should actually try to get each wheel weighed for an accurate determination of tire pressure. If you are just weighing front and rear you can use the Michelin pressure guide but you should add 5# to try to accommodate one side being somewhat heavier than the other. No one on the forum can tell you the correct pressure. No one. You must know the RV weights before making any adjustments. Never exceed the pressure listed on the tire sidewalls and be sure your tires are cold when you set the pressure.


This....my tires say 110psi on the sidewall, but my weights gave me 80psi front, 85 rear. MUCH better ride and handling.

Al

CA Traveler

The Western States

Senior Member

Joined: 01/03/2004

View Profile


Offline
Posted: 07/13/19 11:24am Link  |  Quote  |  Print  |  Notify Moderator

Weight each side and use the heavy side for the axle.

Also useful for deteriming that you have a significant side to side imbalance.


2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob


wildtoad

Blythewood, SC

Senior Member

Joined: 06/05/2011

View Profile



Good Sam RV Club Member

Offline
Posted: 07/14/19 05:27am Link  |  Quote  |  Print  |  Notify Moderator

HighwayJunky wrote:

...Is there an opinion as to what weights are best both for smooth driving/safety and diesel mileage


I’ll add in tire wear, tire longevity

The pressures on the placard are your best bet to achieve your stated goals. Lowering your pressures can give you a better ride, but may affect other objectives. Keep in mind the tire chart simply states the minimum pressure required to support the weight. No other factors included.


Tom Wilds
Blythewood, SC
2016 Newmar Baystar Sport 3004

JoeH

Apollo Beach,FL

Senior Member

Joined: 02/21/2001

View Profile



Good Sam RV Club Member

Offline
Posted: 07/15/19 11:27am Link  |  Quote  |  Print  |  Notify Moderator

I suggest you plan a little trip to Bushnell ( about 1 hour from Kissimmee) and for $45 they will weigh each wheel and measure your height. Once you have the weights, refer to the Michelin chart to see what the proper PSI is.

Here's a link with the info


Joe
2013 Dutch Star 4338- all electric
Toad is 2015 F-150 with bikes,kayaks and Harley aboard

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Newmar Ventana LE Recommended Tire Pressures
Search:   Advanced Search

Search only in Class A Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.