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How to increase Lateral Gs in 2015 GT?

Old 09-07-2015, 08:30 PM
  #1  
mungodrums
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Smile How to increase Lateral Gs in 2015 GT?

What determines Lateral Gs / high? Tires, suspension? I see that base GT / 2015 is 84, not so good. Would it increase significantly with high performance summer tires and maybe the Ford Racing Handling package? Maybe hit 95-98 lateral gs? Ger.
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Old 08-09-2018, 10:44 PM
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79FStreet
 
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Default Increasing 2015 GT Lateral G's

Originally Posted by mungodrums View Post
What determines Lateral Gs / high? Tires, suspension? I see that base GT / 2015 is 84, not so good. Would it increase significantly with high performance summer tires and maybe the Ford Racing Handling package? Maybe hit 95-98 lateral gs? Ger.

These are my recent Autocross numbers. This is on concrete rounding 75 to 80 foot radius' and slaloms at about 40 mph. The Bridgestone RE71R's are rated at 200 treadwear. My GT came with the performance pack. I've added Koni Sport shocks and an Eiback front anti-roll bar. I've set the front toe out 1/16". The rear toe is neutral. The rear camber is at - 1.5. I run with the Traction Control turned off. The car magazines rated the stock (asphalt) lateral g-force performance at 0.94 g's. The track surface and tires are big factors. I'm running 285 X 35 X 19 tires on the rear and 265 X 35 X 19 up front.
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Old 08-11-2018, 10:09 AM
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proeagles
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What you want to do will definitely increase it.
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Old 08-19-2018, 06:17 PM
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Norm Peterson
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Unless you plan to compete where there are rules limiting wheel width, include wheels that are at least 10" wide all around in your plan. If you ever plan on running 305-wide tires, go with 10.5" or 11" even if you're only thinking in terms of 285's now.

If you insist on running staggered tire or wheel width sizing, less stagger is better than more until you get into forced induction levels of power. Compare the wheel & tire sizes that Ford now uses in their Performance Pack Level 2 option for the GT and the GT350/GT350R. They're much more seriously intended than Performance Pack (aka Performance Pack Level 1 or PP1) wheel widths and tire sizes, which in turn are a step beyond base.

As mentioned, there are gains to be had in alignment . . . alignment settings that shouldn't be too aggressive for your average driving particularly with respect to toe.


Norm

Last edited by Norm Peterson; 08-19-2018 at 06:25 PM.
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Old 10-12-2018, 12:52 PM
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Buck Sergeant
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Default How to increase Lateral Gs in 2015 GT?

mongodrums, it would take to long to explain "chassis geometry" which is what you need to understand in order to answer your question. So here is a link to a great article which any "road course" racer should familiarize themselves with. https://nasaspeed.news/columns/drive...ecar-dynamics/ Yes, it took me many years of "stock car" racing to begin to get a handle on racing suspensions.
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