Tire Question...12R22.5

[pattypape]

Hi Neil,

Is there a higher weight rated, larger tire that is more available.
that you would recommend???

The 12R's are not available at many tire stores, usually ordered in
the area that I live, And finding a 12R on the side of the road
with a flat could be a problem. It would really be hard to find a
single matching tire replacement.

Bill 88 FC Michigan



--- In WanderlodgeForum@yahoogroups.com, "Neil & Pat"
wrote:
>
> Hi John, you have already received several answers to your
inquiry; however,
> I thought that I would add a few additional thoughts. I believe
that what
> you are thinking of doing would not only be ill advised but may be
downright
> dangerous. From my years as a tire engineer and with A' Weigh We
Go
> weighing coaches including many Bluebirds (my own PT-36 included)
I have
> knowledge that most all late 90s Birds are very close to their
maximum GVWR
> or GAWR as delivered and many are over that critical (and legally
> enforceable) limit when operated.
>
> For that reason based on the lessor ability to carry a load the
11R tires
> are in no way suitable for use on your 98 LX. The actual load
capability
> for the 12R and 11R are #6610/7390 & #6780/6005 (single/dual)
respectively,
> thus, you can see that there is a major reduction in the tires
carrying
> capacity, probably less that your coach requires. On the slim
chance that
> your specific coach might be unusually light where the 11R could
carry the
> weight it will require an increase in tire pressure to do so,
something that
> most RVers hate to do because of the ride quality reduction that
accompanies
> higher tire pressures. In addition there is a approximately
a .75" radius
> reduction (affecting your computers and dash readouts) along with
a .80"
> reduction in tread width with a corresponding reduction in tire
footprint
> area (which will increase wear, decrease steering power and
decrease
> stopping power); finally while your current rims will probably be
OK to use
> they are not optimal for the 11R (9:00 vs. 8:25) a fact which will
also
> compromise somewhat the total tire performance
>
> Do not listen to those who are not unbiased experts in just what
tires are
> required for RV usage. Remember also that RV are the only vehicle
on the
> road that "operates at 100% of its capability 100% of the tire."
Tires are
> no place to compromise; there are some very important people on
board your
> coach. Do the right thing and have your coach weighed properly,
> wheel-by-wheel as is done by the RVSEF, only then will you be able
to make
> sound judgments re: tires, pressures, etc. If you have any other
questions
> or if I have misread your original question please do not hesitate
to ask
> additional questions.
>
> Regards,
>
> Neil LeKander
> Author "The RVer's Ultimate Survival Guide"
> author@...
>
> -----Original Message-----
> From: WanderlodgeForum@yahoogroups.com
> [mailto:WanderlodgeForum@yahoogroups.com]On Behalf Of John
> Sent: Wednesday, October 11, 2006 6:44 PM
> To: WanderlodgeForum@yahoogroups.com
> Subject: [WanderlodgeForum] Tire Question...12R22.5
>
> I have started looking for new tires for our coach as it has the
> origional tires on it. While they are showing no cracking at all,
I am
> still concerned about their age and would like to start swapping
them
> out before I have to do it from the side of the road. The current
> tires are 12R22.5 which seems to be a lot more uncommon than
> 11R22.5s(which I run on my dump truck). From talking to a couple
tire
> people they say the 11R22.5 are a little smaller(shorter). Has
anyone
> switched from the 12s to the 11s? Any recomendations on a
particular
> brand?
>
> Thanks,
> John Cassel
> 98 Wanderlodge LX
>
>
>
> [Non-text portions of this message have been removed]
>