Flat spots in tires!!

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Old 16 Oct 2004, 11:25 pm   #1 (permalink)
Roger Redford
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Default Flat spots in tires!!

Dear experts,

I have a 97 Camry XLE. 120K miles.

A few years ago, I bought some Goodyear Regatta tires.

Latley, I had the tires rotated. Suddenly, there is a
lot of road noise. I thought it was a CVJ. Or a wheel
bearing. When I turn to the right, the sound is more
pronounced. When I turn to the left, the sound is less.

But the dealer says that the problem is the tires.

So today, I exchanged the right rear tire with the
spare. The rumbling sound was less.

Then, I exchanged the spare with the left rear tire.
Again the rumbling sound was less.

I ran my hand around the left rear tire. There was a
number of flat spots on the edges. On the inside edge.
(closer to the center of the vehicle)

This is really odd. The wheels are balanced. And
the wheels have been aligned.

What might have caused this? What would cause a
tire to wear on the inside edge?

Do you think that this could be the fault of the
tire, and should be fixed under warranty?


Thanks a lot
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Old 17 Oct 2004, 12:05 am   #2 (permalink)
Mark A
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Default Re: Flat spots in tires!!

"Roger Redford" <condor_222@yahoo.com> wrote in message
news:4be257cb.0410161925.4ca76081@posting.google.c om...
> Dear experts,
>
> I have a 97 Camry XLE. 120K miles.
>
> A few years ago, I bought some Goodyear Regatta tires.
>
> Latley, I had the tires rotated. Suddenly, there is a
> lot of road noise. I thought it was a CVJ. Or a wheel
> bearing. When I turn to the right, the sound is more
> pronounced. When I turn to the left, the sound is less.
>
> But the dealer says that the problem is the tires.
>
> So today, I exchanged the right rear tire with the
> spare. The rumbling sound was less.
>
> Then, I exchanged the spare with the left rear tire.
> Again the rumbling sound was less.
>
> I ran my hand around the left rear tire. There was a
> number of flat spots on the edges. On the inside edge.
> (closer to the center of the vehicle)
>
> This is really odd. The wheels are balanced. And
> the wheels have been aligned.
>
> What might have caused this? What would cause a
> tire to wear on the inside edge?
>
> Do you think that this could be the fault of the
> tire, and should be fixed under warranty?
>
>
> Thanks a lot


Rotating tires is vastly over-rated, and in many cases can make a slight
problem into a large problem. In general, if you do rotate tires, always
make sure they stay on the same side of the vehicle, so that they will
turning in the same direction as you rotate them.

Flat spots are often caused by worn shocks or struts, but can be made worse
by unbalanced tires, poor wheel alignment, or improper rotation. Just
because a tire is balanced, it does not mean it was done correctly, or that
the weights are still on the tires.

One thing that irritates me is that most tire shops will inflate new tires
to 35+ psi and then spin balance them. I prefer about 32 psi (I believe
Toyota recommends 28 psi for my 98 V6), so when I deflate them to 32, they
may not perfectly balanced anymore (assuming they were perfectly balanced in
the first place).

I never rotate my tires unless I am replacing the rears (I always put the
new ones on the front). The fronts wear about twice as fast as the rears on
a FWD vehicle, so I usually just buy 2 tires at a time, unless they are all
worn (front and rear). I have not had any noticeable uneven tire wear in my
2 Camry's I have owned (92 and 98), even though I don't rotate (except when
the rears are worn out, and I put the new ones on the front and move the old
front to rear).


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Old 17 Oct 2004, 02:32 am   #3 (permalink)
Truckdude
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Default Re: Flat spots in tires!!


"Mark A" <nobody@nowhere.com> wrote in message
newsbmcd.17$T31.72096@news.uswest.net...
> "Roger Redford" <condor_222@yahoo.com> wrote in message
> news:4be257cb.0410161925.4ca76081@posting.google.c om...
> > Dear experts,
> >
> > I have a 97 Camry XLE. 120K miles.
> >
> > A few years ago, I bought some Goodyear Regatta tires.
> >
> > Latley, I had the tires rotated. Suddenly, there is a
> > lot of road noise. I thought it was a CVJ. Or a wheel
> > bearing. When I turn to the right, the sound is more
> > pronounced. When I turn to the left, the sound is less.
> >
> > But the dealer says that the problem is the tires.
> >
> > So today, I exchanged the right rear tire with the
> > spare. The rumbling sound was less.
> >
> > Then, I exchanged the spare with the left rear tire.
> > Again the rumbling sound was less.
> >
> > I ran my hand around the left rear tire. There was a
> > number of flat spots on the edges. On the inside edge.
> > (closer to the center of the vehicle)
> >
> > This is really odd. The wheels are balanced. And
> > the wheels have been aligned.
> >
> > What might have caused this? What would cause a
> > tire to wear on the inside edge?
> >
> > Do you think that this could be the fault of the
> > tire, and should be fixed under warranty?
> >
> >
> > Thanks a lot

>
> Rotating tires is vastly over-rated, and in many cases can make a slight
> problem into a large problem. In general, if you do rotate tires, always
> make sure they stay on the same side of the vehicle, so that they will
> turning in the same direction as you rotate them.


Why?




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Old 17 Oct 2004, 06:36 am   #4 (permalink)
mark schofield
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Default Re: Flat spots in tires!!

I had a problem with Goodyear Wrangler tires on my ford ranger. there is a
TSB on them which says they wear out quickly and are often noisy. I printed
the info from the below web site, brought it to the dealer, and got some
money back. put on new tires and no noise.

http://www.nhtsa.dot.gov/cars/problems/


"Truckdude" <keepiton@theboard.com> wrote in message
news:umocd.2119$5l3.1688@trnddc02...
>
> "Mark A" <nobody@nowhere.com> wrote in message
> newsbmcd.17$T31.72096@news.uswest.net...
> > "Roger Redford" <condor_222@yahoo.com> wrote in message
> > news:4be257cb.0410161925.4ca76081@posting.google.c om...
> > > Dear experts,
> > >
> > > I have a 97 Camry XLE. 120K miles.
> > >
> > > A few years ago, I bought some Goodyear Regatta tires.
> > >
> > > Latley, I had the tires rotated. Suddenly, there is a
> > > lot of road noise. I thought it was a CVJ. Or a wheel
> > > bearing. When I turn to the right, the sound is more
> > > pronounced. When I turn to the left, the sound is less.
> > >
> > > But the dealer says that the problem is the tires.
> > >
> > > So today, I exchanged the right rear tire with the
> > > spare. The rumbling sound was less.
> > >
> > > Then, I exchanged the spare with the left rear tire.
> > > Again the rumbling sound was less.
> > >
> > > I ran my hand around the left rear tire. There was a
> > > number of flat spots on the edges. On the inside edge.
> > > (closer to the center of the vehicle)
> > >
> > > This is really odd. The wheels are balanced. And
> > > the wheels have been aligned.
> > >
> > > What might have caused this? What would cause a
> > > tire to wear on the inside edge?
> > >
> > > Do you think that this could be the fault of the
> > > tire, and should be fixed under warranty?
> > >
> > >
> > > Thanks a lot

> >
> > Rotating tires is vastly over-rated, and in many cases can make a slight
> > problem into a large problem. In general, if you do rotate tires, always
> > make sure they stay on the same side of the vehicle, so that they will
> > turning in the same direction as you rotate them.

>
> Why?
>
>
>
>



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Old 17 Oct 2004, 06:36 am   #5 (permalink)
Ted Mittelstaedt
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Default Re: Flat spots in tires!!


"Mark A" <nobody@nowhere.com> wrote in message
newsbmcd.17$T31.72096@news.uswest.net...

>
> One thing that irritates me is that most tire shops will inflate new tires
> to 35+ psi and then spin balance them. I prefer about 32 psi (I believe
> Toyota recommends 28 psi for my 98 V6), so when I deflate them to 32, they
> may not perfectly balanced anymore (assuming they were perfectly balanced

in
> the first place).
>


Not the case. You want them spun at 35psi. When you deflate them to 32psi
and
then drive on them they warm up, and warm air expands and the tire pressure
ends
up back at 35psi once the tire is warmed up

Ted.


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Old 17 Oct 2004, 06:39 am   #6 (permalink)
Nate Nagel
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Default Re: Flat spots in tires!!

Roger Redford wrote:

> Dear experts,
>
> I have a 97 Camry XLE. 120K miles.
>
> A few years ago, I bought some Goodyear Regatta tires.
>
> Latley, I had the tires rotated. Suddenly, there is a
> lot of road noise. I thought it was a CVJ. Or a wheel
> bearing. When I turn to the right, the sound is more
> pronounced. When I turn to the left, the sound is less.
>
> But the dealer says that the problem is the tires.
>
> So today, I exchanged the right rear tire with the
> spare. The rumbling sound was less.
>
> Then, I exchanged the spare with the left rear tire.
> Again the rumbling sound was less.
>
> I ran my hand around the left rear tire. There was a
> number of flat spots on the edges. On the inside edge.
> (closer to the center of the vehicle)
>
> This is really odd. The wheels are balanced. And
> the wheels have been aligned.
>
> What might have caused this? What would cause a
> tire to wear on the inside edge?
>
> Do you think that this could be the fault of the
> tire, and should be fixed under warranty?
>
>
> Thanks a lot


That sounds more like "cupping" - check the shock absorber on the corner
of the vehicle that that tire was originally installed on. What happens
is the tire wears like that when the wheel is ever so slightly out of
balance and the shock absorber is weak.

nate

--
replace "fly" with "com" to reply.
http://home.comcast.net/~njnagel
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Old 17 Oct 2004, 08:44 am   #7 (permalink)
badgolferman
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Default Re: Flat spots in tires!!

Roger Redford wrote:
> Dear experts,
>
> I have a 97 Camry XLE. 120K miles.
>
> A few years ago, I bought some Goodyear Regatta tires.
>
> Latley, I had the tires rotated. Suddenly, there is a
> lot of road noise. I thought it was a CVJ. Or a wheel
> bearing. When I turn to the right, the sound is more
> pronounced. When I turn to the left, the sound is less.
>
> But the dealer says that the problem is the tires.
>
> So today, I exchanged the right rear tire with the
> spare. The rumbling sound was less.
>
> Then, I exchanged the spare with the left rear tire.
> Again the rumbling sound was less.
>
> I ran my hand around the left rear tire. There was a
> number of flat spots on the edges. On the inside edge.
> (closer to the center of the vehicle)
>
> This is really odd. The wheels are balanced. And
> the wheels have been aligned.
>
> What might have caused this? What would cause a
> tire to wear on the inside edge?
>
> Do you think that this could be the fault of the
> tire, and should be fixed under warranty?
>
>
> Thanks a lot


I have never been fond of Goodyear tires. Cupping and uneven wear has been
my experience with everyone I've had. After replacing them with even cheap
Futura (Pep Boys) tires the cupping stopped. It's not to say there may be
some mechanical problem with your car, but the Goodyears may be partly at
fault also.


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Old 17 Oct 2004, 09:39 am   #8 (permalink)
nItpIk
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Default Re: Flat spots in tires!!

Flat spots on tires arise from either being out of balance or from loose
linkage on the front of the car which allows a "not so" out of balance wheel
to hop while moving down the road.

Wear on the inside of the tire could be normal or an alignment issue,
depending on the vehicle.


"Roger Redford" <condor_222@yahoo.com> wrote in message
news:4be257cb.0410161925.4ca76081@posting.google.c om...
> Dear experts,
>
> I have a 97 Camry XLE. 120K miles.
>
> A few years ago, I bought some Goodyear Regatta tires.
>
> Latley, I had the tires rotated. Suddenly, there is a
> lot of road noise. I thought it was a CVJ. Or a wheel
> bearing. When I turn to the right, the sound is more
> pronounced. When I turn to the left, the sound is less.
>
> But the dealer says that the problem is the tires.
>
> So today, I exchanged the right rear tire with the
> spare. The rumbling sound was less.
>
> Then, I exchanged the spare with the left rear tire.
> Again the rumbling sound was less.
>
> I ran my hand around the left rear tire. There was a
> number of flat spots on the edges. On the inside edge.
> (closer to the center of the vehicle)
>
> This is really odd. The wheels are balanced. And
> the wheels have been aligned.
>
> What might have caused this? What would cause a
> tire to wear on the inside edge?
>
> Do you think that this could be the fault of the
> tire, and should be fixed under warranty?
>
>
> Thanks a lot



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Old 17 Oct 2004, 11:12 am   #9 (permalink)
Mark
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Default Re: Flat spots in tires!!

> > Rotating tires is vastly over-rated, and in many cases can make a slight
> > problem into a large problem. In general, if you do rotate tires, always
> > make sure they stay on the same side of the vehicle, so that they will
> > turning in the same direction as you rotate them.

>
> Why?


Because the tread "leans" in one direction after a using the tire for
awhile. Even if it does not damage the tire, it will usually ride
harsher, and wear much quicker if you move it the other side of the
vehicle.
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Old 17 Oct 2004, 11:15 am   #10 (permalink)
Mark
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Default Re: Flat spots in tires!!

> > One thing that irritates me is that most tire shops will inflate new tires
> > to 35+ psi and then spin balance them. I prefer about 32 psi (I believe
> > Toyota recommends 28 psi for my 98 V6), so when I deflate them to 32, they
> > may not perfectly balanced anymore (assuming they were perfectly balanced

> in
> > the first place).
> >

>
> Not the case. You want them spun at 35psi. When you deflate them to 32psi
> and
> then drive on them they warm up, and warm air expands and the tire pressure
> ends
> up back at 35psi once the tire is warmed up
>
> Ted.


Perhaps I should qualify my statement. I always check (and deflate or
fill) my tires while warm, since I always do it at a gas station which
is not close to my home.

So I use 32 psi warm pressure, not 32 psi cold pressure.
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