tire pressure

[emc2jb6]

i just put some bridgestone v-steel tires on my 35fcrb bb and was
wandering about tire pressure. what are people running front and rear.

[Scott]

On our 86FC35RB I run 115lbs on the steers, and 85lbs on the drive, New
Michelin XZ-2. BUT that really does/should not mean ANYTHING TO YOUR
APPLICATION.

I am sure Bridgestone has a chart that will give you the model tire,
and the air pressure based on the weight they have to carry. In order
to make sense of this info, you MUST know the weight of the coach/
axles. Find a set of truck scales and go weigh the coach. Weigh the
coach fully loaded, fuel, water, and "stuff" like you were leaving for
a trip..the best way is to weigh each corner, but you may get by with
just getting the front and rear weights. THEN from the weigh ticket
match the weight to the appropriate pressure. NO OTHER WAY to be sure
and correct. Tires are way to expensive to make an error here, not to
mention the safety factor.

ScottB
86FC35
SC

--- In WanderlodgeForum@yahoogroups.com, "emc2jb6" wrote:
>
> i just put some bridgestone v-steel tires on my 35fcrb bb and was
> wandering about tire pressure. what are people running front and rear.
>

[Henry Jay Hannigan]

---I put whatever pressure the tire states..nothing
less...eg....100psi front...then it's 100psi.......if 80psi duel..then
it's 80psi dual etc.
Hank Hannigan
90SP36(FOR SALE in Vegas)
80FC31





In WanderlodgeForum@yahoogroups.com, "emc2jb6" wrote:
>
> i just put some bridgestone v-steel tires on my 35fcrb bb and was
> wandering about tire pressure. what are people running front and
rear.
>

[birdshill123]

This has been discussed at length on the net for many years. Inlating
to the max. pressure on the sidewall is incorrect. Every mfr. publishes
a load/inflation chart and that is your guide to proper pressure. There
is some leeway for na RV to inflate a little beyond the listed psi.
Michelin gives a full expalantion on their website. I will concede that
on a heavy vehicle like a BB the max presures are very close.
Especially on the front. But way off on the duallies. If you followed
that theory on every vehicle you owned your pressures would be way too
high in most cases. Say a duallie pickup.

Bruce

[Alex Smith]

Hello,
I have followed several discussions in the past on tires, load ratings, and
brands. However, not much has been said on tire pressure.

A placard in my coach indicates 105 psi on front and 75 psi on rears. Is this
the current thinking? 75 psi on the rear tires seems a little low esp when max
pressure is over 100 psi.

I have gotten some different advice locally, but I'm still running with the
pressure as shown on the BB placard.

Any comments appreciated.
Alex Smith
Tallahassee, FL
82FC35


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[Rob Robinson]

Alex the prevailing wisdom here involves actual weight(s) and the use of
tire manufacturers tire guides. If you cannot weigh your coach at each wheel
position then the next best is to weigh the axels. Once you have the weights
you then proceed to the manufacturers tire guide (Michelin has one) and find
your tire and size and the correct pressure for the load you are carrying.
Front and tag axel weights divided by two and dual wheeled drive axel weight
divided by four.


On 17/07/06, Alex Smith wrote:
>
> Hello,
> I have followed several discussions in the past on tires, load ratings,
> and brands. However, not much has been said on tire pressure.
>
> A placard in my coach indicates 105 psi on front and 75 psi on rears. Is
> this the current thinking? 75 psi on the rear tires seems a little low esp
> when max pressure is over 100 psi.
>
> I have gotten some different advice locally, but I'm still running with
> the pressure as shown on the BB placard.
>
> Any comments appreciated.
> Alex Smith
> Tallahassee, FL
> 82FC35
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+
> countries) for 2¢/min or less.
>
> [Non-text portions of this message have been removed]
>
>
>



--
Rob, Sue & Merlin Robinson
94 WLWB


[Non-text portions of this message have been removed]

[Pete Masterson]

The air pressure should be consistent with the load ratings for the
brand of tire and the actual weight of your coach. While the BB
manual has a chart in the owners manual (along with the required
placard), it would be better to use the similar weight/air pressure
chart provided by the tire manufacturer (usually accessible at the
tire company web site).

The placard is based on BB's estimated weight (with the OEM tires) --
you need to weigh your coach to determine the _actual_ tire pressure
required with the normal load you carry. If you check your yellow
pages for "public scales", hopefully you should find a scale
reasonably close by*. You should load your coach as you would for a
trip (full fuel, water tanks as you might normally have them, and
food and baggage on board).

The archives for this group probably have an explanation --- and I've
seen several in RV-related magazines as well --- that explain
precisely how to weigh the coach. You need to know the weight on each
axle and on each wheel left vs. right. You want to be sure that the
left-right load is reasonably balanced and that no axle is carrying
more than its rated weight capacity. You should then inflate the
tires for the weight of each axle per the tire mfgs table. The trade
off is more air pressure will carry more weight -- but more air
pressure will make the ride less-smooth (that's why you don't want to
carry more air than is necessary).

While simply filling the tires to the maximum pressure (as shown on
the sidewall) will certainly ensure that you haven't under-inflated
the tire, it may make your vehicle ride more harshly and may degrade
the handling.

Remember, too, that air inflation measurements must be made when the
tire is at ambient temperature as heat generated in driving will
raise the pressure, potentially causing to be under-inflated when the
tires are cool.

*Note: state-run "weigh stations" generally do not want to see an RV
pull in to their scales. In California, you run a risk of getting a
ticket, especially at a busy weigh station. Some other states may be
more forgiving and/or may even be willing to pull the several weights
you need (axle by axle, etc.) It would be wise to telephone ahead
before pulling into a state-run weigh station.

Pete Masterson
aeonix1@...
'95 Bluebird Wanderlodge WBDA 4203
El Sobrante, CA




On Jul 17, 2006, at 11:57 AM, Alex Smith wrote:

> Hello,
> I have followed several discussions in the past on tires, load
> ratings, and brands. However, not much has been said on tire pressure.
>
> A placard in my coach indicates 105 psi on front and 75 psi on
> rears. Is this the current thinking? 75 psi on the rear tires seems
> a little low esp when max pressure is over 100 psi.
>
> I have gotten some different advice locally, but I'm still
> running with the pressure as shown on the BB placard.
>
> Any comments appreciated.
> Alex Smith
> Tallahassee, FL
> 82FC35
>



[Non-text portions of this message have been removed]

[Alex Smith]

Thanks Rob for the reply. There is a scale available several miles down the
interstate. I'll get that done next time out.
Alex

Rob Robinson wrote:
Alex the prevailing wisdom here involves actual weight(s) and the use
of
tire manufacturers tire guides. If you cannot weigh your coach at each wheel
position then the next best is to weigh the axels. Once you have the weights
you then proceed to the manufacturers tire guide (Michelin has one) and find
your tire and size and the correct pressure for the load you are carrying.
Front and tag axel weights divided by two and dual wheeled drive axel weight
divided by four.

On 17/07/06, Alex Smith wrote:
>
> Hello,
> I have followed several discussions in the past on tires, load ratings,
> and brands. However, not much has been said on tire pressure.
>
> A placard in my coach indicates 105 psi on front and 75 psi on rears. Is
> this the current thinking? 75 psi on the rear tires seems a little low esp
> when max pressure is over 100 psi.
>
> I have gotten some different advice locally, but I'm still running with
> the pressure as shown on the BB placard.
>
> Any comments appreciated.
> Alex Smith
> Tallahassee, FL
> 82FC35
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+
> countries) for 2¢/min or less.
>
> [Non-text portions of this message have been removed]
>
>
>

--
Rob, Sue & Merlin Robinson
94 WLWB

[Non-text portions of this message have been removed]






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[Alex Smith]

Thanks Pete for the information. I checked http://www.michelin-us.com and they have
some really good information. If anyone needs to know how to weigh an RV, this
website shows just how to do it.
Alex

Pete Masterson wrote: The air
pressure should be consistent with the load ratings for the
brand of tire and the actual weight of your coach. While the BB
manual has a chart in the owners manual (along with the required
placard), it would be better to use the similar weight/air pressure
chart provided by the tire manufacturer (usually accessible at the
tire company web site).

The placard is based on BB's estimated weight (with the OEM tires) --
you need to weigh your coach to determine the _actual_ tire pressure
required with the normal load you carry. If you check your yellow
pages for "public scales", hopefully you should find a scale
reasonably close by*. You should load your coach as you would for a
trip (full fuel, water tanks as you might normally have them, and
food and baggage on board).

The archives for this group probably have an explanation --- and I've
seen several in RV-related magazines as well --- that explain
precisely how to weigh the coach. You need to know the weight on each
axle and on each wheel left vs. right. You want to be sure that the
left-right load is reasonably balanced and that no axle is carrying
more than its rated weight capacity. You should then inflate the
tires for the weight of each axle per the tire mfgs table. The trade
off is more air pressure will carry more weight -- but more air
pressure will make the ride less-smooth (that's why you don't want to
carry more air than is necessary).

While simply filling the tires to the maximum pressure (as shown on
the sidewall) will certainly ensure that you haven't under-inflated
the tire, it may make your vehicle ride more harshly and may degrade
the handling.

Remember, too, that air inflation measurements must be made when the
tire is at ambient temperature as heat generated in driving will
raise the pressure, potentially causing to be under-inflated when the
tires are cool.

*Note: state-run "weigh stations" generally do not want to see an RV
pull in to their scales. In California, you run a risk of getting a
ticket, especially at a busy weigh station. Some other states may be
more forgiving and/or may even be willing to pull the several weights
you need (axle by axle, etc.) It would be wise to telephone ahead
before pulling into a state-run weigh station.

Pete Masterson
aeonix1@...
'95 Bluebird Wanderlodge WBDA 4203
El Sobrante, CA

On Jul 17, 2006, at 11:57 AM, Alex Smith wrote:

> Hello,
> I have followed several discussions in the past on tires, load
> ratings, and brands. However, not much has been said on tire pressure.
>
> A placard in my coach indicates 105 psi on front and 75 psi on
> rears. Is this the current thinking? 75 psi on the rear tires seems
> a little low esp when max pressure is over 100 psi.
>
> I have gotten some different advice locally, but I'm still
> running with the pressure as shown on the BB placard.
>
> Any comments appreciated.
> Alex Smith
> Tallahassee, FL
> 82FC35
>

[Non-text portions of this message have been removed]






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[Non-text portions of this message have been removed]

[John Suter]

Hi Alex,

Great advice from Pete. As you will want to follow
his advice to weigh each tire separately, as you call
to locate scales, you will have to specifically ask if
they have that capability as most do not or will not.
(They are Certified by Dept of Transportation
therefore put up guard rails at scale sides so trucks
have to weigh entire load and cannot drop off one side
and receive a Certificate for a lighter weight than
actual.) I have weighed individual tires in years
past at the truck stop (Flying J, I think) in the
vicinity of the Havana (Hwy 27) exit of I-10 near you.

Pete probably assumed you knew all tires on the same
axle should carry the same pressure. Meaning the
heaviest tire position per axle will govern pressure,
within the maximum limits of rim and tire casing.

John Suter
Jacksonville, FL


--- Alex Smith wrote:

> Thanks Pete for the information. I checked
> http://www.michelin-us.com and they have some really good
> information. If anyone needs to know how to weigh an
> RV, this website shows just how to do it.
> Alex
>
> Pete Masterson wrote:
> The air pressure should be
> consistent with the load ratings for the
> brand of tire and the actual weight of your coach.
> While the BB
> manual has a chart in the owners manual (along with
> the required
> placard), it would be better to use the similar
> weight/air pressure
> chart provided by the tire manufacturer (usually
> accessible at the
> tire company web site).
>
> The placard is based on BB's estimated weight (with
> the OEM tires) --
> you need to weigh your coach to determine the
> _actual_ tire pressure
> required with the normal load you carry. If you
> check your yellow
> pages for "public scales", hopefully you should
> find a scale
> reasonably close by*. You should load your coach as
> you would for a
> trip (full fuel, water tanks as you might normally
> have them, and
> food and baggage on board).
>
> The archives for this group probably have an
> explanation --- and I've
> seen several in RV-related magazines as well ---
> that explain
> precisely how to weigh the coach. You need to know
> the weight on each
> axle and on each wheel left vs. right. You want to
> be sure that the
> left-right load is reasonably balanced and that no
> axle is carrying
> more than its rated weight capacity. You should
> then inflate the
> tires for the weight of each axle per the tire mfgs
> table. The trade
> off is more air pressure will carry more weight --
> but more air
> pressure will make the ride less-smooth (that's why
> you don't want to
> carry more air than is necessary).
>
> While simply filling the tires to the maximum
> pressure (as shown on
> the sidewall) will certainly ensure that you
> haven't under-inflated
> the tire, it may make your vehicle ride more
> harshly and may degrade
> the handling.
>
> Remember, too, that air inflation measurements must
> be made when the
> tire is at ambient temperature as heat generated in
> driving will
> raise the pressure, potentially causing to be
> under-inflated when the
> tires are cool.
>
> *Note: state-run "weigh stations" generally do not
> want to see an RV
> pull in to their scales. In California, you run a
> risk of getting a
> ticket, especially at a busy weigh station. Some
> other states may be
> more forgiving and/or may even be willing to pull
> the several weights
> you need (axle by axle, etc.) It would be wise to
> telephone ahead
> before pulling into a state-run weigh station.
>
> Pete Masterson
> aeonix1@...
> '95 Bluebird Wanderlodge WBDA 4203
> El Sobrante, CA
>
> On Jul 17, 2006, at 11:57 AM, Alex Smith wrote:
>
> > Hello,
> > I have followed several discussions in the past
> on tires, load
> > ratings, and brands. However, not much has been
> said on tire pressure.
> >
> > A placard in my coach indicates 105 psi on
> front and 75 psi on
> > rears. Is this the current thinking? 75 psi on
> the rear tires seems
> > a little low esp when max pressure is over 100
> psi.
> >
> > I have gotten some different advice locally,
> but I'm still
> > running with the pressure as shown on the BB
> placard.
> >
> > Any comments appreciated.
> > Alex Smith
> > Tallahassee, FL
> > 82FC35
> >
>
> [Non-text portions of this message have been
> removed]
>
>
>
>
>
>
> ---------------------------------
> See the all-new, redesigned Yahoo.com. Check it
> out.
>
> [Non-text portions of this message have been
> removed]
>
>


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