Rear Tires

C

claude brousson

New member
Jan 20, 1999
292
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0
Okay fellows I need your help, especially the engineers who have the
hard data and know the physics. Here's the hypothetical problem:

Suppose I have four tires, all either E range or all D range. Two of
them are in "fair" condition, and two are in "better" condition. I am
refering to side wall conditont more than tread depth. Should I put the
"better" condition tires in the rear wheel position or not?

Don't suggest putting any of them on the front, as in my hypothetical
case the wheels on the front are a different size and different wheel
studs etc.( Just want to close that solution completely)

What I am trying to get at is--where is the fulcrum point when one
turns? The myth, and maybe fact or maybe not, is that the fulcrum point
would be at the mid wheels and therefor as one went down the road and
when one turned corners, there would be greater side to side forces
exerted on the rear sidewall tires than on the mid sidewall tires.

If this was then true, I would presume it would be prudent to put the
better tires in the rear wheel position and the poorer ones in the mid
position. Again I'm presuming that at the fulcrum point there is less
side to side force exerted than at some point behind it. Now for all I
know maybe the fulcrum point is half way between the mid and rear wheel.
Don't tell me that I didn't want to hear that. Maybe that isn't even
possible, however maybe it is the pivet point.

Waiting for the facts and not myth

Claude in Victoria
 
Maybe something to add to your question. Do we get more blow outs on the
front, mid or rear axel?

>Okay fellows I need your help, especially the engineers who have the
>hard data and know the physics. Here's the hypothetical problem:
>
>Suppose I have four tires, all either E range or all D range. Two of
>them are in "fair" condition, and two are in "better" condition. I am
>refering to side wall conditont more than tread depth. Should I put the
>"better" condition tires in the rear wheel position or not?
>
>Don't suggest putting any of them on the front, as in my hypothetical
>case the wheels on the front are a different size and different wheel
>studs etc.( Just want to close that solution completely)
>
>What I am trying to get at is--where is the fulcrum point when one
>turns? The myth, and maybe fact or maybe not, is that the fulcrum point
>would be at the mid wheels and therefor as one went down the road and
>when one turned corners, there would be greater side to side forces
>exerted on the rear sidewall tires than on the mid sidewall tires.
>
>If this was then true, I would presume it would be prudent to put the
>better tires in the rear wheel position and the poorer ones in the mid
>position. Again I'm presuming that at the fulcrum point there is less
>side to side force exerted than at some point behind it. Now for all I
>know maybe the fulcrum point is half way between the mid and rear wheel.
>Don't tell me that I didn't want to hear that. Maybe that isn't even
>possible, however maybe it is the pivet point.
>
>Waiting for the facts and not myth
>
>Claude in Victoria
>
>
 
Both of my blowouts were on the driver side mid axel. Surprisingly the first
one blew out just after I had changed the driver side rear axel tire for a
new one.
Have used the name Warbucks for many years, and used it by mistake on my new
ISP, than decided not to change it.

>In a message dated 11/09/1999 12:38:59 AM Central Standard Time,

>
>> Maybe something to add to your question. Do we get more blow outs on the
>> front, mid or rear axle?
>>
>Big Daddy
>
>I do love your new name. I once again agree, we do need more info.
>So somebody do a survey where did most of you blow a tire?
>
>Take Care
>Arch
>
>
 
Had a blowout on mid pass. side, And tire separation on mid driver side

Ron

- ----- Original Message -----
From:
To:
Sent: Monday, November 08, 1999 11:47 PM
Subject: Re: GMC: Rear Tires

> In a message dated 11/09/1999 12:38:59 AM Central Standard Time,

>
> > Maybe something to add to your question. Do we get more blow outs on
the
> > front, mid or rear axle?
> >
> Big Daddy
>
> I do love your new name. I once again agree, we do need more info.
> So somebody do a survey where did most of you blow a tire?
>
> Take Care
> Arch
 
Claude, I for one, would not want poor tires at any location.
However, if the choice had to be made, I would put the "better"
tires on the mid axle. My reasoning is that the mid axle tire
carries more of the braking load, and is the tire that is more
likely to encounter a curb in turns.

As for the "twisting" side forces on the rear tires, I don't
think this is much of a factor. It certainly looks bad when you
are turning in a parking lot, but in a turn on a highway, I think
the extra twisting side load on the tire is negligible.

I hope this helps.

Scott Shean
Baton Rouge, LA
78 Royale

>-----Original Message-----
>From: owner-gmcmotorhome
>[mailto:owner-gmcmotorhome]On Behalf
>Of Claude Brousson
>Sent: Monday, November 08, 1999 11:39 PM
>To: gmcmotorhome
>Subject: GMC: Rear Tires
>
>
>Okay fellows I need your help, especially the engineers
>who have the
>hard data and know the physics. Here's the hypothetical problem:
>
>Suppose I have four tires, all either E range or all D
>range. Two of
>them are in "fair" condition, and two are in "better"
>condition. I am
>refering to side wall conditont more than tread depth.
>Should I put the
>"better" condition tires in the rear wheel position or not?
>
>Don't suggest putting any of them on the front, as in
>my hypothetical
>case the wheels on the front are a different size and
>different wheel
>studs etc.( Just want to close that solution completely)
>
>What I am trying to get at is--where is the fulcrum
>point when one
>turns? The myth, and maybe fact or maybe not, is that
>the fulcrum point
>would be at the mid wheels and therefor as one went
>down the road and
>when one turned corners, there would be greater side to
>side forces
>exerted on the rear sidewall tires than on the mid
>sidewall tires.
>
>If this was then true, I would presume it would be
>prudent to put the
>better tires in the rear wheel position and the poorer
>ones in the mid
>position. Again I'm presuming that at the fulcrum
>point there is less
>side to side force exerted than at some point behind
>it. Now for all I
>know maybe the fulcrum point is half way between the
>mid and rear wheel.
>Don't tell me that I didn't want to hear that. Maybe
>that isn't even
>possible, however maybe it is the pivet point.
>
>Waiting for the facts and not myth
>
>Claude in Victoria
>
 
As I pack up to leave, I am thinking,

I LOVE TO BUY NEW TIRES FOR MY GMC.

I just would not like to worry about a blowout...., I feel great they are
new. Well worth the money. Would not like to think I saved a few dollars
to pay later for body work and hassles.

gene

>Claude, I for one, would not want poor tires at any location.
>However, if the choice had to be made, I would put the "better"
>tires on the mid axle. My reasoning is that the mid axle tire
>carries more of the braking load, and is the tire that is more
>likely to encounter a curb in turns.
>
>As for the "twisting" side forces on the rear tires, I don't
>think this is much of a factor. It certainly looks bad when you
>are turning in a parking lot, but in a turn on a highway, I think
>the extra twisting side load on the tire is negligible.
>
>I hope this helps.
>
>Scott Shean
>Baton Rouge, LA
>78 Royale
>
>>-----Original Message-----
>>From: owner-gmcmotorhome
>>[mailto:owner-gmcmotorhome]On Behalf
>>Of Claude Brousson
>>Sent: Monday, November 08, 1999 11:39 PM
>>To: gmcmotorhome
>>Subject: GMC: Rear Tires
>>
>>
>>Okay fellows I need your help, especially the engineers
>>who have the
>>hard data and know the physics. Here's the hypothetical problem:
>>
>>Suppose I have four tires, all either E range or all D
>>range. Two of
>>them are in "fair" condition, and two are in "better"
>>condition. I am
>>refering to side wall conditont more than tread depth.
>>Should I put the
>>"better" condition tires in the rear wheel position or not?
>>
>>Don't suggest putting any of them on the front, as in
>>my hypothetical
>>case the wheels on the front are a different size and
>>different wheel
>>studs etc.( Just want to close that solution completely)
>>
>>What I am trying to get at is--where is the fulcrum
>>point when one
>>turns? The myth, and maybe fact or maybe not, is that
>>the fulcrum point
>>would be at the mid wheels and therefor as one went
>>down the road and
>>when one turned corners, there would be greater side to
>>side forces
>>exerted on the rear sidewall tires than on the mid
>>sidewall tires.
>>
>>If this was then true, I would presume it would be
>>prudent to put the
>>better tires in the rear wheel position and the poorer
>>ones in the mid
>>position. Again I'm presuming that at the fulcrum
>>point there is less
>>side to side force exerted than at some point behind
>>it. Now for all I
>>know maybe the fulcrum point is half way between the
>>mid and rear wheel.
>>Don't tell me that I didn't want to hear that. Maybe
>>that isn't even
>>possible, however maybe it is the pivet point.
>>
>>Waiting for the facts and not myth
>>
>>Claude in Victoria
>>
>
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
Claude,
I agree with Scott, the only place a marginal set of tires should be put
is in the nearest dumpster. The cost of body work compared to a new
tire, the tire wins hands down.

J.R, Wright
GMC GreatLaker
77 Eleganza II
Michigan

>
> Claude, I for one, would not want poor tires at any location.
> However, if the choice had to be made, I would put the "better"
> tires on the mid axle. My reasoning is that the mid axle tire
> carries more of the braking load, and is the tire that is more
> likely to encounter a curb in turns.
>
> As for the "twisting" side forces on the rear tires, I don't
> think this is much of a factor. It certainly looks bad when you
> are turning in a parking lot, but in a turn on a highway, I think
> the extra twisting side load on the tire is negligible.
>
> I hope this helps.
>
> Scott Shean
> Baton Rouge, LA
> 78 Royale
>
> >-----Original Message-----
> >From: owner-gmcmotorhome
> >[mailto:owner-gmcmotorhome]On Behalf
> >Of Claude Brousson
> >Sent: Monday, November 08, 1999 11:39 PM
> >To: gmcmotorhome
> >Subject: GMC: Rear Tires
> >
> >
> >Okay fellows I need your help, especially the engineers
> >who have the
> >hard data and know the physics. Here's the hypothetical problem:
> >
> >Suppose I have four tires, all either E range or all D
> >range. Two of
> >them are in "fair" condition, and two are in "better"
> >condition. I am
> >refering to side wall conditont more than tread depth.
> >Should I put the
> >"better" condition tires in the rear wheel position or not?
> >
> >Don't suggest putting any of them on the front, as in
> >my hypothetical
> >case the wheels on the front are a different size and
> >different wheel
> >studs etc.( Just want to close that solution completely)
> >
> >What I am trying to get at is--where is the fulcrum
> >point when one
> >turns? The myth, and maybe fact or maybe not, is that
> >the fulcrum point
> >would be at the mid wheels and therefor as one went
> >down the road and
> >when one turned corners, there would be greater side to
> >side forces
> >exerted on the rear sidewall tires than on the mid
> >sidewall tires.
> >
> >If this was then true, I would presume it would be
> >prudent to put the
> >better tires in the rear wheel position and the poorer
> >ones in the mid
> >position. Again I'm presuming that at the fulcrum
> >point there is less
> >side to side force exerted than at some point behind
> >it. Now for all I
> >know maybe the fulcrum point is half way between the
> >mid and rear wheel.
> >Don't tell me that I didn't want to hear that. Maybe
> >that isn't even
> >possible, however maybe it is the pivet point.
> >
> >Waiting for the facts and not myth
> >
> >Claude in Victoria
> >
 
oooh. Nearest Dumpster? I am not sure how Jim will take that. Better
watch it. Darren

>
> Claude,
> I agree with Scott, the only place a marginal set of tires should be put
> is in the nearest dumpster. The cost of body work compared to a new
> tire, the tire wins hands down.
>
Darren Paget
76 Experimental
Another Fab Day
paget
http://www.TZEplus.com
 
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