| Author |
Message |
John
Guest
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 Posted:
Sun Nov 21, 2004 5:40 pm Post subject:
GTS Tire Chatter/Banging |
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2000 Celica GTS with 45k miles. I just bought 7" wheels with Goodyear
F1's, which has significantly more grip than the stock 6.5" and alternate
tires.
Upon hard acceleration from stop, there is a loud banging which comes
across as a tire chatter to me. Three times it banged, and I'm not sure,
I may or may not have let up on the accelerator.
Is something wrong with the suspension?
Advice is appreciated.
John
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HachiRoku
Guest
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| Posted:
Sun Nov 21, 2004 5:40 pm Post subject:
Re: GTS Tire Chatter/Banging |
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On Sun, 21 Nov 2004 08:07:17 -0500, John wrote:
| Quote: | 2000 Celica GTS with 45k miles. I just bought 7" wheels with Goodyear
F1's, which has significantly more grip than the stock 6.5" and alternate
tires.
Upon hard acceleration from stop, there is a loud banging which comes
across as a tire chatter to me. Three times it banged, and I'm not sure,
I may or may not have let up on the accelerator.
Is something wrong with the suspension?
Advice is appreciated.
John
|
Biggest problem with 'upgrading' tires and wheels is the geometry of the
suspension. Of course, you first checked to make sure your new rims and
tires were clear of any suspensions bits/frame and body. Does this car
have bolt-on wheel wells? Are the tires clear of these?
The suspension is set to have a certain size of wheel/tire combination.
When you've exceeded this size there are other things to take into
account. Perhaps the quick fix is to take it to a tuning shop that works
with suspensions and have the whole thing, front and rear realigned.
Beyond that, you may need different springs or shocks to make things right
again.
One key when adding different tires/wheels is to try to keep the overall
dimensions close to original. This does not mean any problems go away, but
it tends to keep them to a minimum. Let's say the original tire was a
215/60-16. You want to go to a 17. You want to pick a tire that will keep
the same overall aspect, put simply, your original tire had a diameter of,
say, 27.5 inches, you want to stay close to this diameter.
Look here:
http://www.dakota-truck.net/TIRECALC/tirecalc.html
and punch in tire sizes that come close to the same height or diamter as
the original. To go to a larger wheel, you have to go with a lower profile
tire, and you don't want to go a lot wider; 15 mm is about the maximum
increase in width without changing the suspension. This really means you
can get away with it, it's still not correct.
Here's a better one that gives more information about the tire dimensions:
http://www.1010tires.com/TireSizeCalculator.asp
You only said you changed the width, check the clearances on the calipers. |
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John
Guest
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| Posted:
Mon Nov 22, 2004 1:18 am Post subject:
Re: GTS Tire Chatter/Banging |
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In article <DX1od.1692$VG.519@trndny07>, Trueno@ae86.GTS says...
| Quote: | On Sun, 21 Nov 2004 08:07:17 -0500, John wrote:
2000 Celica GTS with 45k miles. I just bought 7" wheels with Goodyear
F1's, which has significantly more grip than the stock 6.5" and alternate
tires.
Upon hard acceleration from stop, there is a loud banging which comes
across as a tire chatter to me. Three times it banged, and I'm not sure,
I may or may not have let up on the accelerator.
Is something wrong with the suspension?
Advice is appreciated.
John
Biggest problem with 'upgrading' tires and wheels is the geometry of the
suspension. Of course, you first checked to make sure your new rims and
tires were clear of any suspensions bits/frame and body. Does this car
have bolt-on wheel wells? Are the tires clear of these?
The suspension is set to have a certain size of wheel/tire combination.
When you've exceeded this size there are other things to take into
account. Perhaps the quick fix is to take it to a tuning shop that works
with suspensions and have the whole thing, front and rear realigned.
Beyond that, you may need different springs or shocks to make things right
again.
One key when adding different tires/wheels is to try to keep the overall
dimensions close to original. This does not mean any problems go away, but
it tends to keep them to a minimum. Let's say the original tire was a
215/60-16. You want to go to a 17. You want to pick a tire that will keep
the same overall aspect, put simply, your original tire had a diameter of,
say, 27.5 inches, you want to stay close to this diameter.
Look here:
http://www.dakota-truck.net/TIRECALC/tirecalc.html
and punch in tire sizes that come close to the same height or diamter as
the original. To go to a larger wheel, you have to go with a lower profile
tire, and you don't want to go a lot wider; 15 mm is about the maximum
increase in width without changing the suspension. This really means you
can get away with it, it's still not correct.
Here's a better one that gives more information about the tire dimensions:
http://www.1010tires.com/TireSizeCalculator.asp
|
Got the combo at tirerack, they guaranteed the clearances. The only
difference is 7" wheels versus 6.5". The tires are the identical size as
the stock tires, as is the wheel diameter. Yes, it's a good idea for me
to go to an alignment shop and see if someone can identify this syndrome.
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Gord Beaman
Guest
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| Posted:
Mon Nov 22, 2004 5:40 am Post subject:
Re: GTS Tire Chatter/Banging |
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John <na@nospam.com> wrote:
| Quote: |
Got the combo at tirerack, they guaranteed the clearances. The only
difference is 7" wheels versus 6.5". The tires are the identical size as
the stock tires, as is the wheel diameter. Yes, it's a good idea for me
to go to an alignment shop and see if someone can identify this syndrome.
|
I wonder if you might have a problem with your CV joints?...any
odd sounds / actions when lightly accelerating into and out of
turns? turning from lock to lock while driving in a parking lot,
etc?
--
-Gord.
(use gordon in email) |
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HachiRoku
Guest
|
| Posted:
Mon Nov 22, 2004 5:41 am Post subject:
Re: GTS Tire Chatter/Banging |
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On Sun, 21 Nov 2004 15:18:05 -0500, John wrote:
| Quote: | In article <DX1od.1692$VG.519@trndny07>, Trueno@ae86.GTS says...
On Sun, 21 Nov 2004 08:07:17 -0500, John wrote:
2000 Celica GTS with 45k miles. I just bought 7" wheels with Goodyear
F1's, which has significantly more grip than the stock 6.5" and alternate
tires.
Upon hard acceleration from stop, there is a loud banging which comes
across as a tire chatter to me. Three times it banged, and I'm not sure,
I may or may not have let up on the accelerator.
Is something wrong with the suspension?
Advice is appreciated.
John
Biggest problem with 'upgrading' tires and wheels is the geometry of the
suspension. Of course, you first checked to make sure your new rims and
tires were clear of any suspensions bits/frame and body. Does this car
have bolt-on wheel wells? Are the tires clear of these?
The suspension is set to have a certain size of wheel/tire combination.
When you've exceeded this size there are other things to take into
account. Perhaps the quick fix is to take it to a tuning shop that works
with suspensions and have the whole thing, front and rear realigned.
Beyond that, you may need different springs or shocks to make things right
again.
One key when adding different tires/wheels is to try to keep the overall
dimensions close to original. This does not mean any problems go away, but
it tends to keep them to a minimum. Let's say the original tire was a
215/60-16. You want to go to a 17. You want to pick a tire that will keep
the same overall aspect, put simply, your original tire had a diameter of,
say, 27.5 inches, you want to stay close to this diameter.
Look here:
http://www.dakota-truck.net/TIRECALC/tirecalc.html
and punch in tire sizes that come close to the same height or diamter as
the original. To go to a larger wheel, you have to go with a lower profile
tire, and you don't want to go a lot wider; 15 mm is about the maximum
increase in width without changing the suspension. This really means you
can get away with it, it's still not correct.
Here's a better one that gives more information about the tire dimensions:
http://www.1010tires.com/TireSizeCalculator.asp
Got the combo at tirerack, they guaranteed the clearances. The only
difference is 7" wheels versus 6.5". The tires are the identical size as
the stock tires, as is the wheel diameter. Yes, it's a good idea for me
to go to an alignment shop and see if someone can identify this syndrome.
|
Hmmm...go to the 1010tires link above, enter your old tire size and then
the new tire size and see if you get the 'warning message'. |
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John
Guest
|
| Posted:
Thu Nov 25, 2004 3:40 am Post subject:
Re: GTS Tire Chatter/Banging |
|
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In article <gdj2q0lli0jgnr2k3a6tts2ss8b6oleuap@4ax.com>,
gord@islandtelecom.com says...
| Quote: | John <na@nospam.com> wrote:
Got the combo at tirerack, they guaranteed the clearances. The only
difference is 7" wheels versus 6.5". The tires are the identical size as
the stock tires, as is the wheel diameter. Yes, it's a good idea for me
to go to an alignment shop and see if someone can identify this syndrome.
I wonder if you might have a problem with your CV joints?...any
odd sounds / actions when lightly accelerating into and out of
turns? turning from lock to lock while driving in a parking lot,
etc?
--
-Gord.
(use gordon in email)
No "problem" per se. There are no noises, or odd behavior. It "feels" |
as though the inside tire may be making less contact, or sliding slightly
on light turns. The car could very well need an alignment. I've gone
lock-to-lock driving slow, and haven't noticed anything unusual.
I read around-it sounds as though this could be tire slip. I was used
to being able to peel out under most conditions with previous tires. I
wonder if there is so much torque/grab with the new 7" wheels, that when
the tires are on the edge of spin/grab, this "bang" can occur. (?)
tx,
john |
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