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Old 04-01-2004, 11:56 PM   #1
NeoteriX
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Default Broken in new tires, ABS coming on early?

Setup:
On stock 16" WRX rims, I have them shod with 225/50-16 Yokohama ES100s. They have about 600-700 miles on them, so they're fairly well broken in.

Tire Pressures:
For the street, I have the tire pressures at about: 35 front, 33 rear so when warmed up they're about 37-38 front 35-36 rear.

After the tires got worn in, I could perceive a definite increase in turn in with the new ES100s versus the RE92s, and on this curvy stretch of road I frequent, I could average 40ish MPH while still keeping things well under control with the RE-92s, and now it's up to 45-50 MPH. I definitely feel an increase in the performance of the new tires.

However, with a couple panic stop/slowdowns that I've tried (some in a parking lot, some as a result of people cutting in front of me and so on) I think I'm perceiving that the ABS is activating a lot sooner than I remember it would on the RE-92s. Dry and Wet. I haven't had a chance to run them in a complete downpour, but once when there was a small sun shower, I was coming up to a highway feeder U turn, and I could see a patch of wet pavement (not standing water), I slowed down normally, and as I hit the wet patch, the ABS went off -- I distinctly remember noting that I wouldn't have guessed my RE92s would have went into ABS in that situation.

Is this a problem with my perception? Is this a function of my tire pressures? Any ideas?
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Old 04-02-2004, 10:13 AM   #2
NeoteriX
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bump
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Old 04-02-2004, 10:33 AM   #3
Uncle Scotty
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I was UN-impressed by the ES100's on a WRX that I drove.
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Old 04-03-2004, 06:13 AM   #4
NeoteriX
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there's gotta be more to it...
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Old 04-03-2004, 09:38 AM   #5
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Quote:
Originally posted by NeoteriX
there's gotta be more to it...
You'd be surprised how much tires have to do with it.
As soon as they start to lose grip.....ABS...better tires=less ABS.
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Old 04-04-2004, 03:49 AM   #6
Howl
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A lot of people are more comfortable driving without ABS. You can pull the fuse and test how you feel without it.
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Old 04-04-2004, 04:23 AM   #7
NeoteriX
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Quote:
Originally posted by Uncle Scotty
You'd be surprised how much tires have to do with it.
As soon as they start to lose grip.....ABS...better tires=less ABS.
Yeah exactly -- which is why I'm so confused as to why I feel like the ABS is coming on sooner on the ES100s than the RE92s. I understand the ES100s are a budget performance tire and there are much stronger choices, but regardless, they've got to be significantly better than the RE92s.

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Old 04-11-2004, 12:41 PM   #8
NeoteriX
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...
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Old 04-12-2004, 12:23 AM   #9
Uncle Scotty
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They get any better yet? Sometimes tires get a lot better after a few hundred miles....
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Old 04-12-2004, 02:35 AM   #10
NeoteriX
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Quote:
Originally posted by Uncle Scotty
They get any better yet? Sometimes tires get a lot better after a few hundred miles....
Yeah actuall I think they are feeling a bit better. *shrug* who knows it may be my perception playing tricks again.

It's times like this I wish I had some accelerometer device or maybe a program for my PDA that can utilize my GPS locator and tell me speed, braking distance, etc.
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Old 04-12-2004, 09:44 AM   #11
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There are way too many variables to "perceive" that the ABS is coming on sooner than before. It may very well be coming on at the same point.

Do you know which wheels are trying to lock up? What may have been front lockup triggering the ABS w/the RE92s could now be the rears locking up due to better grip up front.......

Instrumented tests may not even answer your questions unless you do back to back testing under the exact conditions. Anything else is purely speculation.....

Jay Storm
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