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Uneven tire ware (Update!)

thescreensavers

thescreensavers

Diamond Member
I got the Conti Extream Conti DWS tires

Anyhow when they were installed April 16'th I had them pumped up to 38psi, 200 miles in I took some air out to 35psi. I just checked my tire ware 800 miles in, and the outer edges on both sides and on every tire is at 10/32nd the inside is at 11/32nd.

Also 730 of those miles is me commuting to and from school all highway, the first 500 miles were driven extremely easy when I did drive in the city. And I just been driving a bit more spiritedly but nothing crazy.

What gives?


also in before pump to sidewall pressure :awe:

Update: See below
 
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onza said:
What is the total miles on the car now?

Last alignment?
Click to expand...

45k, and I had an alignment Jan 24th

P1070450.jpg


I had just dropped my car on some Z springs so thats why the before's are bad, The specs are all Green under 350z Specs, I told them to get as close as possible to Sedan Specs.

But doesn't 10/32nds on both edges prove its not camber?

MJinZ said:
Don't your tires come with 10/32 new?
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These tires come with 11/32nd new for my size. Generally Yes
 
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The SAI and Included Angle numbers are WILDLY out of spec, even the revised numbers. The SAI and Included Angle shouldn't vary much at all from one side to the other and your car is off by 7 degrees from one side to the other. Something's broken or bent somewhere in the front suspension because neither of those are typically adjustable.

I'm kind of shocked that the shop didn't know this. I definitely wouldn't take the car back to whoever did that alignment.

ZV
 
Zenmervolt said:
The SAI and Included Angle numbers are WILDLY out of spec, even the revised numbers. The SAI and Included Angle shouldn't vary much at all from one side to the other and your car is off by 7 degrees from one side to the other. Something's broken or bent somewhere in the front suspension because neither of those are typically adjustable.

I'm kind of shocked that the shop didn't know this. I definitely wouldn't take the car back to whoever did that alignment.

ZV
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:hmm: I had some one on the g35 forum tell me the same thing, I PMed him and everything about it never answered. But he said the exact same thing. But from what I see its inside the range???

I got my car aligned at the dealer.

Align_Included.gif


If camber and toe are correct how exactly does this effect alignment? The picture is what SAI and included angle is right?

So I got the car a year ago (mothers day 09) And only time I have hit my suspension where as it could damage it would be trying to avoid an accident and my rear Driver side wheel hopped a curb but I braked and it was at like 15, Everything is fine. I have done nothing to the front suspension as were it could bend or break. I drive over bumps very slowly as well. I believe the car was aligned before I picked it up from the dealer, so I need to go and get that.

This is going to be very uh, interesting since I am lowered.
 
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Check this thread out.. It might help somewhat. http://my350z.com/forum/brakes-and-suspension/482664-suspension-101-a.html Its a wealth of information concerning the suspension on a 350Z, and is a great read for us G35 drivers too.

Z springs drop the G35 sedan approximately an inch right? Do you have any toe/camber arms? I know its always been recommended on the coupes to atleast get the rear camber and toe parts if you drop more than an inch. Zs and Gs have always had weird tire wear problems though.
 
Yea I know that thread , yes its an inch all around. I dont need toe/camber arms. And the weird tire wear issue was with camber on the inside of the tire. Not on both inside and outside edges.
 
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thescreensavers said:
:hmm: I had some one on the g35 forum tell me the same thing, I PMed him and everything about it never answered. But he said the exact same thing. But from what I see its inside the range???
Click to expand...

3.0 is not within the range of 3.8 to 5.3 and -4.0 is certainly not within the range of 3.8 to 5.3. Similarly 1.8 is not within the range of 2.9 to 5.9 and -5.4 is not within that range either.

SAI and Included Angle are non-adjustable and are the result of where the suspension hard points are for a given car. The only way for these settings to get outside the range is for something to wear out (a bushing) or to get broken or bent (an A-arm, etc). For obvious reasons, these hardpoints are set up to be symmetrical; they should not vary from side to side of the car.

thescreensavers said:
If camber and toe are correct how exactly does this effect alignment? The picture is what SAI and included angle is right?
Click to expand...

Alignment settings are typically taken with the car on a lift and they don't cycle the suspension through its normal travel. If the SAI and Included Angle are off the suspension will change geometry in unintended ways as it moves through its travel which means that the settings won't necessarily be constant. Even if the alignment settings are correct on the alignment machine, with a messed up SAI and Included Angle they will not be correct in actual driving.

At this point, the car really ought to be taken to a shop that specializes in front-end repairs; possibly even a shop that performs alignments for local racing teams.

ZV
 
^ Ok thanks for the info, I will get things looked and figure out whats happening. The Dealer I got my car from, when they received it they aligned it so I need to find out if this was a problem then as well and they ignored it.

The car was at the dealer for 3 months after alignment so I have no idea if something happened between then and when I picked it up. I am hoping that alignment shows the issue.
 
^ I just looked at goodyear and they have similar complaints, I looked at Bridgestone and guess what also similar complaints.

Not that I am defending continental but all tire manufactures have the similar complaints on them. On Monday Ill be going to a shop to check and talk about my alignment issues and tire wear issues.
 
Update: I went to a shop today that specialize on lowered cars

here are my new alignment specs, I had an empty tank they said it was ok. As you can see the infiniti dealer did a horrible job and there machine was screwed up

allignment.jpg
 
^^
They could not get the camber in spec?
But yea that looks much better.

And the new Cont DWS tires are soem of the newwest tires out there. And every tire maker has "problems". I love my DWS tires and helped me get through a 100year snow storm in N.VA on a RWD CTS.
 
Yea I knew about the camber, I need a kit to adjust that and its not that bad to merit a kit so it will stay like that.

But yea Thank god the SAI and related stuff is fine in the front and toe was off. Glad its fixed.
 
Glad it got worked out for you. Alignments are tricky things and a good shop is really worth seeking out. Nice to see a 0.00 thrust angle too; sounds like the second shop really knew what they were doing. 🙂

ZV
 
Zenmervolt said:
Glad it got worked out for you. Alignments are tricky things and a good shop is really worth seeking out. Nice to see a 0.00 thrust angle too; sounds like the second shop really knew what they were doing. 🙂

ZV
Click to expand...

Glad to hear that you say its good 😀

It was my original intention to get my first alignment at this shop but since I was at the dealer for a car show I had it done there. Yet another reason not to go to the dealer lol.
 
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