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Traction tyres & cornering G for the street

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Old 12-31-2015, 09:18 PM
  #16  
mikey_audiogeek
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Originally Posted by 924srr27l
Formula 1 cars are the fastest 4 wheeled vehicles in circuit racing...


Why then didn't an 18" set of wheels with smaller profiles make the car handle better ?


R
Nice answer in this book:
Race and Rally Car Source Book: The Guide to Building or Modifying a Competition Car: Amazon.co.uk: Allan Staniforth: 0699414001675: Books Race and Rally Car Source Book: The Guide to Building or Modifying a Competition Car: Amazon.co.uk: Allan Staniforth: 0699414001675: Books

Well worth reading.

In general, though:
In an optimised system, any change is for the worse until it is re-optimised.
Re-optimisation may require fundamental changes.

Cheers,
Mike
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Old 12-31-2015, 09:43 PM
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porscharu
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Originally Posted by mikey_audiogeek
Incorrect. The larger sidewall in F1 is because it is mandated in the rules.
Oh, I thought it was because it was faster and provided better traction. I think I have missed the point of this thread. I realize the rules mandate a 330mm wheel 660mm OD tire both do not change the physics of an air spring. OT over I will bow out and let the thread continue.
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Old 12-31-2015, 11:30 PM
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Originally Posted by porscharu
Oh, I thought it was because it was faster and provided better traction. I think I have missed the point of this thread. I realize the rules mandate a 330mm wheel 660mm OD tire both do not change the physics of an air spring. OT over I will bow out and let the thread continue.
If it made the cars faster they would not need a rule...

Cheers,
Mike
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Old 01-01-2016, 11:23 AM
  #19  
porscharu
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If we were both honest with ourselves the taller sidewall is probably to allow larger advertising space by the tire manufacturer. F1 is all about $$$$$$$, and mikey you and I agree more than you might think.
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Old 01-02-2016, 07:37 AM
  #20  
mikey_audiogeek
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Good points.

Happy New Year!

Cheers,
Mike
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Old 01-02-2016, 10:36 AM
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Noahs944
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Originally Posted by 924srr27l
The 16" set I'm using are 140 Lbs a set total (Wheel / Tyre / Air)


As a Comparison the Genuine Porsche 17" Cup set I had on my 968 were 194 Lbs.


As you can appreciate the difference between these 2 sets fitted to the same car and road tested on the street is just beyond belief.


What makes it feel such a staggering difference also is I'm on a Manual Steering rack, so any additional weight and rim & Tyre width / resistance on the front axle is felt immediately as opposed to a Power steering system where the steering wheel effort and feel is not felt as much difference at all when changing wheels.




R
I believe this. Having gone from skinny to wide tires on a stiff de-powered rack (fast ratio), the tires change the experience at low speed anyway.

I like your originality and appreciate your honest and fresh approach to this subject.
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Old 01-02-2016, 04:56 PM
  #22  
924srr27l
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[QUOTE=porscharu;12889189]

As we now know, the word got round the street that this chassis was better than a 911!


R

Last edited by 924srr27l; 02-09-2016 at 05:23 AM.
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