tpms

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Soto, Andre NL/LUS-EAC1

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Apr 22, 2008, 8:38:20 AM4/22/08
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So I just did some research... and apparently there is no direct sensor onboard the wheel, but rather the car uses ABS sensors to monitor rotation speed of each tire. As a tire deflates it becomes smaller in circumference. The tire pressure monitor senses this change and alerts the driver.

Were any of the tires deflated before you filled them up??
If not.. there may be a slight difference in the overall tires diameter that may be affecting the sensor read.  I'll do some more research and see.



André Soto
Design Engineer, Product Development

LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299
Email address: andre...@schaeffler.com
www.lukusa.com


Soto, Andre NL/LUS-EAC1

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Apr 22, 2008, 8:45:57 AM4/22/08
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Can you do me a favor and check the tire sizes and brand that we installed on the vehicle?
I'll compare them to the original size and check to see if there is a variance.
 
I can't do the search here at work, through my notes on your build.
 
 

André Soto
Design Engineer, Product Development

LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299
Email address: andre...@schaeffler.com
www.lukusa.com

 

From: Mpre...@googlegroups.com [mailto:Mpre...@googlegroups.com] On Behalf Of Soto, Andre NL/LUS-EAC1
Sent: Tuesday, April 22, 2008 8:38 AM
To: Mpre...@googlegroups.com
Subject: tpms

ecu...@sbcglobal.net

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Apr 22, 2008, 4:50:00 PM4/22/08
to Mpre...@googlegroups.com
I wonder if its related to that noise i heard. maybe something in the rotor or axle that is a bit off.
Will check tire sizes. They were not deflated before filling. All were at about 30-32 and I filled to about 38.
The light came on when I was doing about 110 on a highway that had holes filled with asphalt. Some bumps but not pot holes.
Shit that car can move when it wants.
Service engine soon light is now on as well. Have 24833 miles. so probably related to that.
I have that computer module you got me. Maybe try it out?
Or, maybe bring blaki for some dr dre love soon......
Z
----- Original Message -----
Sent: Tuesday, April 22, 2008 8:38 AM

Andre

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Apr 22, 2008, 6:00:17 PM4/22/08
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I remember you mentioned the noise. I hope it's nothing serious.. usually noises are bad... but I'll check it out. I think that gizmo I gave will reset the sevice engine light. Actually, I'm pretty sure.
 
It might reset your TPMS light also.. but I'm less sure about that.
 
Nothing in the rotor or axle should affect this sensor.. but the wathcful eye of the dr will help you sir.

ecurb62

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Apr 22, 2008, 8:00:10 PM4/22/08
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Front and rear both 19 in.

Back 255/30

Front 245/45

Inflated well. Smoking tight.


<BR

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Andre

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Apr 22, 2008, 9:04:43 PM4/22/08
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What about the brand, boss...???
--
Andre Soto
330.573.1319
soto....@gmail.com

ecu...@sbcglobal.net

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Apr 22, 2008, 10:05:45 PM4/22/08
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Sorry
Front 245/35
Rear 270/30
Potenza reosoa
Sent from my BlackBerry® wireless handheld

-----Original Message-----
From: Andre <soto....@gmail.com>

Date: Tue, 22 Apr 2008 21:04:43
To:Mpre...@googlegroups.com
Subject: Re: tpms


What about the brand, boss...???


On Tue, Apr 22, 2008 at 8:00 PM, ecurb62 <ecu...@sbcglobal.net <mailto:ecu...@sbcglobal.net> > wrote:



Front and rear both 19 in.
Back 255/30
Front 245/45
Inflated well. Smoking tight.
 


From: Mpre...@googlegroups.com <mailto:Mpre...@googlegroups.com> [mailto:Mpre...@googlegroups.com <mailto:Mpre...@googlegroups.com> ] On Behalf Of Soto, Andre NL/LUS-EAC1
Sent: Tuesday, April 22, 2008 8:46 AM
To: Mpre...@googlegroups.com <mailto:Mpre...@googlegroups.com>
Subject: RE: tpms



 
Can you do me a favor and check the tire sizes and brand that we installed on the vehicle?
I'll compare them to the original size and check to see if there is a variance.
 
I can't do the search here at work, through my notes on your build.
 

 
André Soto
Design Engineer, Product Development
LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299

Email address: andre...@schaeffler.com <mailto:andre...@schaeffler.com>
<http://www.lukusa.com/> www.lukusa.com

 
 

----------------



From: Mpre...@googlegroups.com <mailto:Mpre...@googlegroups.com> [mailto:Mpre...@googlegroups.com <mailto:Mpre...@googlegroups.com> ] On Behalf Of Soto, Andre NL/LUS-EAC1
Sent: Tuesday, April 22, 2008 8:38 AM
To: Mpre...@googlegroups.com <mailto:Mpre...@googlegroups.com>
Subject: tpms
 
So I just did some research... and apparently there is no direct sensor onboard the wheel, but rather the car uses ABS sensors to monitor rotation speed of each tire. As a tire deflates it becomes smaller in circumference. The tire pressure monitor senses this change and alerts the driver.
Were any of the tires deflated before you filled them up??
If not.. there may be a slight difference in the overall tires diameter that may be affecting the sensor read.  I'll do some more research and see.
 
André Soto
Design Engineer, Product Development
LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299

Email address: andre...@schaeffler.com <mailto:andre...@schaeffler.com>
<http://www.lukusa.com/> www.lukusa.com

<BR


No virus found in this incoming message.
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No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.524 / Virus Database: 269.23.3/1390 - Release Date: 4/21/2008 4:23 PM


--
Andre Soto
330.573.1319
soto....@gmail.com <mailto:soto....@gmail.com>

Soto, Andre NL/LUS-EAC1

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Apr 23, 2008, 8:42:38 AM4/23/08
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Can you verify the 245/45 fronts again?..
 
The stock sizes in a 19" are 225-40-19 and 255-35-19
 
The tire choices we used  were recommendations by CCW - this may be where our problem lies - the difference in overall tire size may be too much.
 
If our rear size is 255 30  - then we're a little small on aspect ratio...
If our front tire size is 245 45 - the fronts are a little big on aspect ratio.

POTENZA SPECS:
 
Stock Size:     225 40 19   Overall Diameter: 26.1"
                      255 35 19                             26.1"
 
Our Sizes:      245 45 19                             27.7"
                      255 30 19                             25.1"
 
 
I think we should fix this!..  if we adjust the tire sizes to be closer to stock it'll not only get rid of this current TPMS issue...
but it looks like we'll adjust the appearance of the rear tires to look "bigger" and help our overall dynamics.

Maybe that's why you noticed this problem way back when??? Cuz you were right! Good eye doctor!  I think we shouldn't trust other people to make
decisions for us!?!?
 
I'm sure you're gonna ask.. can we sell the old tires...???   Yes we can.. but we'll lose some money on it...  I think we can get about $100 a tire.
 
 
 
 

André Soto
Design Engineer, Product Development

LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299
Email address: andre...@schaeffler.com
www.lukusa.com

 

From: Mpre...@googlegroups.com [mailto:Mpre...@googlegroups.com] On Behalf Of ecurb62
Sent: Tuesday, April 22, 2008 8:00 PM

Soto, Andre NL/LUS-EAC1

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Apr 23, 2008, 8:59:45 AM4/23/08
to Mpre...@googlegroups.com
uh oh..
I got two different sizes from you for both the front and rear.
If the actual sizes are:
Front 245/35 then this tire doesn't exist.
Rear 270/30 then this tire doesn't exist either.

Potenza reo5oa

Sorry.. can you check them once more to make sure..
I'll try to look through my notes.

André Soto
Design Engineer, Product Development

LuK USA LLC
3401 Old Airport Road
Wooster, OH 44691
Tel: (330) 202-6581 Fax: (330) 202-6299
Email address: andre...@schaeffler.com

www.lukusa.com

ecu...@sbcglobal.net

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Apr 23, 2008, 10:16:01 AM4/23/08
to Mpre...@googlegroups.com
245/35 in front
Sent from my BlackBerry® wireless handheld

-----Original Message-----
From: "Soto, Andre NL/LUS-EAC1" <andre...@schaeffler.com>

Date: Wed, 23 Apr 2008 08:42:38
To:<Mpre...@googlegroups.com>
Subject: RE: tpms


Can you verify the 245/45 fronts again?..
 
The stock sizes in a 19" are 225-40-19 and 255-35-19
 
The tire choices we used  were recommendations by CCW - this may be where our problem lies - the difference in overall tire size may be too much.
 
If our rear size is 255 30  - then we're a little small on aspect ratio...
If our front tire size is 245 45 - the fronts are a little big on aspect ratio.

POTENZA SPECS:
 
Stock Size:     225 40 19   Overall Diameter: 26.1"
                      255 35 19                             26.1"
 
Our Sizes:      245 45 19                             27.7"
                      255 30 19                             25.1"
 
 
I think we should fix this!..  if we adjust the tire sizes to be closer to stock it'll not only get rid of this current TPMS issue...
but it looks like we'll adjust the appearance of the rear tires to look "bigger" and help our overall dynamics.

Maybe that's why you noticed this problem way back when??? Cuz you were right! Good eye doctor!  I think we shouldn't trust other people to make
decisions for us!?!?
 
I'm sure you're gonna ask.. can we sell the old tires...???   Yes we can.. but we'll lose some money on it...  I think we can get about $100 a tire.
 
 
 
 
André Soto
Design Engineer, Product Development
LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299
Email address: andre...@schaeffler.com

<http://www.lukusa.com/> www.lukusa.com

 


----------------


From: Mpre...@googlegroups.com [mailto:Mpre...@googlegroups.com] On Behalf Of ecurb62
Sent: Tuesday, April 22, 2008 8:00 PM
To: Mpre...@googlegroups.com
Subject: RE: tpms




Front and rear both 19 in.
Back 255/30
Front 245/45
Inflated well. Smoking tight.
 


From: Mpre...@googlegroups.com [mailto:Mpre...@googlegroups.com] On Behalf Of Soto, Andre NL/LUS-EAC1
Sent: Tuesday, April 22, 2008 8:46 AM
To: Mpre...@googlegroups.com
Subject: RE: tpms
 
Can you do me a favor and check the tire sizes and brand that we installed on the vehicle?
I'll compare them to the original size and check to see if there is a variance.
 
I can't do the search here at work, through my notes on your build.
 

 
André Soto
Design Engineer, Product Development
LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299
Email address: andre...@schaeffler.com

<http://www.lukusa.com/> www.lukusa.com

 
 

----------------



From: Mpre...@googlegroups.com [mailto:Mpre...@googlegroups.com] On Behalf Of Soto, Andre NL/LUS-EAC1
Sent: Tuesday, April 22, 2008 8:38 AM
To: Mpre...@googlegroups.com
Subject: tpms
 
So I just did some research... and apparently there is no direct sensor onboard the wheel, but rather the car uses ABS sensors to monitor rotation speed of each tire. As a tire deflates it becomes smaller in circumference. The tire pressure monitor senses this change and alerts the driver.
Were any of the tires deflated before you filled them up??
If not.. there may be a slight difference in the overall tires diameter that may be affecting the sensor read.  I'll do some more research and see.
 
André Soto
Design Engineer, Product Development
LuK USA LLC
3401 Old Airport Road
Wooster, OH  44691
Tel: (330) 202-6581   Fax: (330) 202-6299
Email address: andre...@schaeffler.com

<http://www.lukusa.com> www.lukusa.com

ecu...@sbcglobal.net

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Apr 23, 2008, 10:16:37 AM4/23/08
to Mpre...@googlegroups.com
Rear 275/30
Sent from my BlackBerry® wireless handheld

-----Original Message-----
From: "Soto, Andre NL/LUS-EAC1" <andre...@schaeffler.com>

Date: Wed, 23 Apr 2008 08:59:45
To:<Mpre...@googlegroups.com>
Subject: RE: tpms



Soto, Andre NL/LUS-EAC1

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Apr 23, 2008, 11:02:18 AM4/23/08
to Mpre...@googlegroups.com
275/30R19 Rear tire diameter 25.5 - should be 26.1" about 2-3% off design

245/35R19 Front tire diameter 25.9 - should be 26.1" less than 1% off design

It looks like - if anything - the rears are where the problem is.

Maybe after we burn these up.. .we'll replace the rears with a slightly larger size - 275/35 R19. That should remedy what we're seeing.

ecu...@sbcglobal.net

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Apr 23, 2008, 11:11:28 AM4/23/08
to Mpre...@googlegroups.com
I could probably inflate them to the higher end (max is 50psi, and I am at
38psi). I bet if I went to about 42psi it may make up that difference?
Where did you eventually find these tires?
Now I have incentive to take of the DSC!!!!!

Soto, Andre NL/LUS-EAC1

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Apr 23, 2008, 11:48:17 AM4/23/08
to Mpre...@googlegroups.com
I went straight to Bridgestone's website.. instead of using tirerack.. i guess they don't carry those sizes.
I would rather not increase the pressure above 40.. you'll lose traction from the descreased tire footprint.
Let's keep where we are for now , and see if the light goes off. But you're right.. we can make up the radius
distance a bit with pressure.

Soto, Andre NL/LUS-EAC1

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Apr 23, 2008, 12:52:45 PM4/23/08
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Yeah.. the more I think about it.. we might have fixed the problem already.

Soto, Andre NL/LUS-EAC1

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Apr 23, 2008, 4:05:40 PM4/23/08
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When they heat up.. the pressure should raise with the temp. So I would rather leave some safety to below 40psi.

ecurb62

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Apr 23, 2008, 5:36:27 PM4/23/08
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Will do.
By the way..... thanks so very much for the great goodies for sofia!!! Very
cute, thoughtful, and from a guys view, not necessary but then again, I got
a feeling my estrogen environment will be rising precipitously in the next
decade or two. Seriosly, thanks.

Potenza reo5oa


----------------

<BR

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3:51 PM

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Soto, Andre NL/LUS-EAC1

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Apr 24, 2008, 6:54:52 AM4/24/08
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No problem, man.
Next gift will have more testosterone; I promise.
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