S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Ran the car at Road America this past weekend....

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Old Apr 18, 2005 | 06:53 PM
  #1  
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Default Ran the car at Road America this past weekend....

I had a pretty good time. This was a non-competitive rental put on by an F-body club I am in (MFBA).

No passing in turns, must be waved by in the straights.

I was running 245 40 18 Dunlop Super sport race tires. Having nothing to compare them to as far as race tires, I would say that I don't like them much. Even with 40 psi cold in the front, it was still rolling under so much that it was wearing the lettering off the sidewall.

I ordered Hawk race pads, and ended up recieving Hawk street pads, so I used them as I had no alternative. I ran 6 20 minute sessions, and they are almost completely gone, and the rotors are toast.

I was hitting about 125mph on the front and back straights.

The car has stock suspension, and if I went into a corner too fast (basically if I had brake fade), the car would oversteer, requiring a decent amt of correction. If I went into a corner good, but accelerated out too early, it would push a bit.

From the first to 3rd lap, there was a noticeable difference in power. I was running 50% 100 octane for some insurance. Oil was 10-30 royal purple, and oil temps after 20 minutes of racing, were a needle widths past the 250 mark on the stock gauge.

Best lap was a 2:50 in traffic (and slowing down on the front straight for a service truck).

Disclaimer: -I am not a professional driver, I don't know **** about road racing, these are just my personal observations.
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Old Apr 18, 2005 | 07:11 PM
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Default 40 psi cold is probably WAY too much.

I just ran mine at 32f/34r cold and they worked very well for me.
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Old Apr 18, 2005 | 07:18 PM
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I started out at 30 cold, and had scuff marks on the sidewalls nearly down to the rims??
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Old Apr 18, 2005 | 07:19 PM
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That was my thought, but how the hell could he roll over on the sidewalls so much?
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Old Apr 19, 2005 | 05:19 AM
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Default Did you increase incrementally? 18s should have less rollover than 17s (which I run)

and I only rolled to the edge of the tread pattern at 32/34.

What are your alignment settings? Is your suspension okay? What width rims? That just seems really weird.
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Old Apr 19, 2005 | 09:23 AM
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Default Alignment was stock, done by Audi. Suspension seems okay. Here's a pic

http://www.flat-four.com/gallery/Track-RoadAmerica-April2005-Audi/IMG_3869
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Old Apr 19, 2005 | 10:11 AM
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Default For the lazy...

<center><img src="http://www.flat-four.com/gallery/albums/Track-RoadAmerica-April2005-Audi/IMG_3869.jpg"></center><p>How wide are the rims? You said the tires are 245s - are they wide enough for the rims?

It's hard to say, though. They're definitely rolling over pretty far.
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