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Author Topic:   Front Alignment Problem
Boss Hoss
Gearhead

Posts: 223
From: Georgia
Registered: Mar 2001

posted 10-30-2001 08:49 PM     Click Here to See the Profile for Boss Hoss   Click Here to Email Boss Hoss     Edit/Delete Message   Reply w/Quote
One of my front tires (the driver's side) is wearing very harshly and it's also wearing in a strange way. I want to know from someone exactly what kind of adjustment needs to be made. By the way, the front suspension is fairly new, and the passenger side front tire is wearing normally.

If you are standing on the driver's side of the car, looking directly at the front tire, the tread on the very outside edge of the tire is wearing badly. It is only wearing like this on the very OUTSIDE EDGE.

I hope that my attempt to picture what the driver's side tread looks like will be a success, so here goes...Below is a rough sketch of what the TOP of the driver's side tire looks like:

<----- Front of car

(Top edge of tire)

| \...| \...| \<-Chunks missing; this side of tread should be straight up and down like the other side.

By my estimation, the part of the outside tread that is missing is the TRAILING edge of the tread as the tire hits the road. I believe this would be an example of "cupping," but it would be the most serious case of cupping I've ever seen.

I hope my explanation of the problem is clear enough. PLEASE let me know if it isn't clear enough, because I really would like to get an answer about what adjustments to make! THANKS EVERYONE!

------------------
*andy* ([email protected])

also known as...***Boss Hoss***

*1965 Mustang 289 coupe*
*1996 Mustang GT coupe*

[This message has been edited by Boss Hoss (edited 10-30-2001).]

[This message has been edited by Boss Hoss (edited 10-30-2001).]

[This message has been edited by Boss Hoss (edited 10-30-2001).]

[This message has been edited by Boss Hoss (edited 10-30-2001).]

[This message has been edited by Boss Hoss (edited 10-30-2001).]

[This message has been edited by Boss Hoss (edited 10-30-2001).]

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steve'66
Gearhead

Posts: 8796
From: Sonoma,CA,USA
Registered: Mar 2000

posted 10-30-2001 09:22 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Andy,

Cupping is caused by an out of balance wheel, and is compounded by loose wheel bearings. Hope this helps, tighten up the bearings and have the wheels balanced. Good luck,

SteveW

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Boss Hoss
Gearhead

Posts: 223
From: Georgia
Registered: Mar 2001

posted 10-31-2001 07:26 AM     Click Here to See the Profile for Boss Hoss   Click Here to Email Boss Hoss     Edit/Delete Message   Reply w/Quote
I felt that it was cupping, too, but this has to be the most severe case of it I've ever seen! I'm not talking about wear spots on the tire...actual CHUNKS of the tread are missing in some places!

------------------
*andy* ([email protected])

also known as...***Boss Hoss***

*1965 Mustang 289 coupe*
*1996 Mustang GT coupe*

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Fastback68
Gearhead

Posts: 3053
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 10-31-2001 07:48 AM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
Assuming you didn't do some really nasty parking, at the very least it sounds like you have a defective tyre. I'd take it back to the place you bought it and see what they say.

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SteveLaRiviere
Administrator

Posts: 42859
From: Saco, Maine
Registered: May 99

posted 10-31-2001 09:22 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Cupping is also caused by weak shocks.

------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC

Recycle --- Restore a Classic Ford!

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Boss Hoss
Gearhead

Posts: 223
From: Georgia
Registered: Mar 2001

posted 10-31-2001 01:34 PM     Click Here to See the Profile for Boss Hoss   Click Here to Email Boss Hoss     Edit/Delete Message   Reply w/Quote
Steve:
I have brand-new shocks on the front.

Fastback68:
I admit that I haven't considered the possibility of a defective tire, but it seems to be genuine wear, because it is happening in such a specific area (the outer edge of the tire), and because the places on the tire's edge where rubber hasn't been taken off look excessively cupped.

------------------
*andy* ([email protected])

also known as...***Boss Hoss***

*1965 Mustang 289 coupe*
*1996 Mustang GT coupe*

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RonnieT
Gearhead

Posts: 827
From: Port Allen, La. 70767
Registered: Jun 99

posted 10-31-2001 09:55 PM     Click Here to See the Profile for RonnieT   Click Here to Email RonnieT     Edit/Delete Message   Reply w/Quote
Andy,

The best advice I can think to give is to take the car and have the alignment checked. It sounds like your alignment is off and there is no qay to check it accuratly without a frontend machine.

------------------
Ronnie
69 mach1 351W-4V
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23

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rockafellz
Gearhead

Posts: 1426
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 11-01-2001 11:09 AM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Hey All,

I agree with Ronnie T. The alignment machine will give you accurate numbers and if the mechanic is well experienced, he should be able to point out exactly what the problem is.

Regards,

Erik

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