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> Tiars, melted
J P Stein
post Oct 20 2003, 01:02 PM
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Some tires for your perusal. 150 minutes of track time and a drive home.

Can any suspension gurus learn anything form these?


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J P Stein
post Oct 20 2003, 01:03 PM
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The quick brown fox jumped over the lazy bridge


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Brad Roberts
post Oct 20 2003, 01:05 PM
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Get closer with the camera. If you have too.. shoot two pics splitting the tire down the center.

A lot of what tire engineers gather info wise from a tires is done by "feel".. but just seeing tires tell alot about it and what it has done.


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Brad Roberts
post Oct 20 2003, 01:07 PM
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Just the first response from me:

It looks like the fronts are getting hotter than the rears.. Like the car might have been understeering a tad and you where compensating by more steering input.

The rears look like they where on vacation.


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Brad Roberts
post Oct 20 2003, 01:08 PM
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Get some paint on the damn fenders... The primer look only works on "Rat Rods"


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J P Stein
post Oct 20 2003, 01:15 PM
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Thanx, I get a lot of "compliments" on the paint job.
"Rat Rod"?....that works. (IMG:style_emoticons/default/laugh.gif)

You're right about the push....just a tad... which is safe for the big track.....safe is gud for a first timer. The loud pedal would correct it, tho. The rears get hotter than the fronts at AX....didn't have a temp tester at the track.
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Jeroen
post Oct 20 2003, 01:16 PM
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Not an expert, but it looks like you could do with a little less neg.camber

cheers,

Jeroen
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seanery
post Oct 20 2003, 01:17 PM
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I thought that too. At first I thought they may have been slightly over inflated, but I ended thinking too much neg camber.
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dakotaewing
post Oct 20 2003, 01:20 PM
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Are the tires in that condition on all 4 corners, or just the passenger front and rear? Your only showing the passenger side...
Thom
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J P Stein
post Oct 20 2003, 01:27 PM
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About the same on all.

At the AXs, the fronts show even temps across the tread, the rears about 10-15 deg hotter on the inside.
There are those that say 10 deg hotter on the inside is what one wants.

Since rhe rear suspenders are coming apart, nohow, taking out a bit on negative camber dosen't bother me a bit. I just wanna be sure that is the correct thing to do.
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J P Stein
post Oct 20 2003, 01:44 PM
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Prolly shoulda posted these first as they are the tires that get most of the work at PIR.....more right hand turns. These are the outside tires in those.

Rear


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J P Stein
post Oct 20 2003, 01:45 PM
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Front....better focus, too (IMG:style_emoticons/default/laugh.gif)


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Aaron Cox
post Oct 20 2003, 01:56 PM
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what swaybar mount is that in that front pic?
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machina
post Oct 20 2003, 02:00 PM
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i say you need more negative camber. Looks to me like the inside shoulder of the tires is almost virgin compared to the outside of the tire tread. This would indicate the tire is pitching out of the turn more than the negative camber can compensate for.

I can only get about -2deg front and rear on my car right now. I think -3deg would be ideal for our light cars.

Alot of race cars with radial slicks run -4deg or more of neg camber.

Check the tread with pyrometer next time if you can, that will tell you what is going on.

dr
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davep
post Oct 20 2003, 02:03 PM
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I'll admit to not knowing anything, however, my first impression is that they appear evenly worn. They sure got very hot though. I've seen the rubber "dribbles" on slicks before; i.e. lightweight gummies.

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fiid
post Oct 20 2003, 02:03 PM
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QUOTE(acox914 @ Oct 20 2003, 11:56 AM)
what swaybar mount is that in that front pic?

Looks like the tarret to me.

Fiid.
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Aaron Cox
post Oct 20 2003, 02:11 PM
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someone have a link to tarret's site? can i run that mount w/ a stock bar?
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Jeroen
post Oct 20 2003, 02:19 PM
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www.tarett.com

I don't think you can run that mount with a stock bar though...
The tarett bars are bigger than 22mm because they are hollow

cheers,

Jeroen
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Aaron Cox
post Oct 20 2003, 02:23 PM
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ouch $475!
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mharrison
post Oct 20 2003, 02:27 PM
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My suggestion would be that you need some new tires!!! (IMG:style_emoticons/default/laugh.gif)

Just kidding. I'll be following this thread to gain some knowledge on the subject.
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