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FS: 255/35-19 & 295/35-19 Yokomaha A052

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Old 02-18-2023, 07:03 PM
  #16  
cmorales954
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Originally Posted by dbv1
On a 991 GT3? I ran stock rear, oversized (+20) front 71R on a 997, no problem. But the 991 turns in a lot easier and has way more power. Can you not dial in some understeer via tire pressures or the sway bars?
991.1 GTS SPASM.
Old 02-19-2023, 02:13 AM
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sgreer78
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why would you want to add understeer?
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Old 02-19-2023, 08:23 AM
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cmorales954
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Originally Posted by sgreer78
why would you want to add understeer?
The car is too loose for me right now, and the fact that I cannot induce any understeer at any point tells me I simply have too much front tire. I also just made some minor adjustments to the alignment based on tread wear, reducing rear camber from -2.3 to -2 (though when on the rack, camber had somehow increased from the last alignment a few months ago to -2.5), and the car felt much better at yesterday's event, but again no understeer -- just less outrageous oversteer.

I'd rather have a more neutral car with a slight tendency to oversteer than one that ONLY oversteers. Hence, increasing grip in the rear (305 -> 315), and slightly reducing grip in the front (rt660 265 -> A052 255). We'll see if the experiment works at the national tour in March when I get the tires mounted
Old 02-19-2023, 06:19 PM
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Originally Posted by cmorales954
The car is too loose for me right now, and the fact that I cannot induce any understeer at any point tells me I simply have too much front tire. I also just made some minor adjustments to the alignment based on tread wear, reducing rear camber from -2.3 to -2 (though when on the rack, camber had somehow increased from the last alignment a few months ago to -2.5), and the car felt much better at yesterday's event, but again no understeer -- just less outrageous oversteer.

I'd rather have a more neutral car with a slight tendency to oversteer than one that ONLY oversteers. Hence, increasing grip in the rear (305 -> 315), and slightly reducing grip in the front (rt660 265 -> A052 255). We'll see if the experiment works at the national tour in March when I get the tires mounted
If my tow vehicle is back up and running I may see you down there.
Old 02-19-2023, 07:05 PM
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Originally Posted by sgreer78
If my tow vehicle is back up and running I may see you down there.
Fingers crossed! It's a fun venue... hopefully the biting cold stays away.



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