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New Tire Setup Without Shakedown

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28
23
Exp. Type
Autocross
Exp. Level
3-5 Years
Dawsonville, GA
I was hoping to get some input on what I can expect after some changes I made. I am fairly new to Autocross (3rd season) and switched from an 18x9.5 wheel with 285 RS-4 to a 19x11 with 305 Rivals during the offseason.
We are finally starting the season here in Atlanta next month, but unfortunately wont have any chance to shakedown the change beforehand to see what effect this will have on other components and their set up.

I was very happy with the current set up, but could tell that grip was limiting me. My thought is the bigger tires may introduce some understeer...

My setup:
2014 GT
Tokico D-Spec - 2 from hard in front, 4 from hard in rear
Springs: Eibach Sportline (05-09)
Strano Sway bars - full hard front, middle hole rear
Tires - The 285 I was running at 40 hot in front, 36 hot in rear

I appreciate all input, Thanks!!
 

Bill Pemberton

0ld Ford Automotive Racing Terror
8,425
8,356
Exp. Type
Time Attack
Exp. Level
20+ Years
Blair, Nebraska
Maybe Dave W. will drop you a note or post, as I believe he was running Rivals on his Mustang in CAM C. He probably has a better idea on what to run for those BFG tubes , but what did you start at cold?
 

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