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Old 08-11-2008, 11:40 AM   #21
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Weird. I run really high, like 45/42 hot, just to avoid sidewall scrubbing. Do you have the stock suspension or something else?

Is it possible the times dropping were due to better driving and not better grip?
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Old 08-12-2008, 11:19 AM   #22
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No, side wall scrubbing is not really an issue with these specific tires. I used to run BFGoodrich sport compacts, I wouldn't say side wall scrubbing was an issue...I called it sidewall collapse:D I had to run 45 psi front 40 rear...cold, and I couplete scrubbed the sidewall and 100% of the molded tread down the side. I was concerned running these BFG tires too, max psi rating on these tires is 44psi!!!!! Now don't get me wrong, these are a good streetable tire for the price, they just don't hold up in the stock size on the stock rim when being autocrossed.

So back to my current tires, the Hankook RS-2's. These tires have a very stiff sidewall, I don't even think I have much rollover of the tire at 33psi front. I think the wear I'm seeing on the outside of the tread is my not having enough negative camber in the front. I probably have about -1 degree or so. I really need to run -2 to -2.5 degrees in the front. I also know I can run these tires at lower pressure because the guy who won STS was running the same tires on his Civic, he was running something like 27 F, 22 R. He also got fastest PAX of the day. Now I understand I may not be able to go quite that low with the focus being as heavy as it is, but I can run lower.
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Old 08-12-2008, 11:24 AM   #23
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Quote:
Originally Posted by kimbo305 View Post
Weird. I run really high, like 45/42 hot, just to avoid sidewall scrubbing. Do you have the stock suspension or something else?

Oh yeah, suspension is the Roush kit that northcoast was selling last year for $300 or so, included springs, dampers, and a new rear sway.

I bought the kit before I started autocrossing, now I wish I would have held out. Still, I'll probably be upgrading over the winter.
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Old 08-12-2008, 09:38 PM   #24
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Here is all the Hankook info you could want...

http://sccaforums.com/forums/thread/79410.aspx

http://sccaforums.com/forums/thread/304197.aspx

http://sccaforums.com/forums/thread/191711.aspx
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Old 08-13-2008, 08:26 AM   #25
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Cool, thanks for the extra info...that'll take some time to read through. There's gotta be some good info in these threads though.
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Old 08-13-2008, 07:46 PM   #26
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This is a sweet thread! I just saw it for the first time. I'm running a Centerline forged 15x7 wheel with 225/50 BFG g-Force sports as a DD/autox combo, so this all hits close to home! They've been good autox learners, and are great on the street. I run the pressures 35 on the street, then up the fronts to 40 as a starting point each event. These are getting noticeably munched up each event, and not wearing hardly at all between events. My plan is to upgrade these to dedicated wheels with competitive STS rubber when the time comes, and attempt to enjoy the stockers on the street. Hopefully they'll last the rest of the year. (1 event a month) Meanwhile, I'll be checking this thread like white streetglows on rice.
Keep us posted!
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Old 08-14-2008, 01:23 PM   #27
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Alright, I brokedown and orders some camber plates and rear camber bolts. There is a small chance I'll get them installed next weekend. I'd like to use the whole tire at my next autocross :D
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Old 08-19-2008, 05:21 PM   #28
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What camber settings are you going to use?

Did you just get into autocrossing? You have my exact car! I'm trying to graduate from grad school, so autox has taken a back seat but I plan on being at both days of the Black Lake Michelin autocross. I'm not sure what suspension I'll be on or what tires, but I'll be there!

Have you talked with John Brotbeck? He's the reigning SCR STS champ in a Malibu Blue Focus.
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Old 08-19-2008, 09:32 PM   #29
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i also have a black 2004 ZX3..... weiiiird....
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Old 08-21-2008, 05:42 PM   #30
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Quote:
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i also have a black 2004 ZX3..... weiiiird....
For Camber, I'm thinking -2.5 for the front and -1.5 for the rear, we'll see how that works out.

I will be at the michelin event for sure.

-400'x1400' or the flattest, obstacle free, tarmac on the southeast
-Course design by one of the top designers in the country
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