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Bigger torsion bars.

And/Or stiffer slow speed shocks to slow down the rate of weight transfer. And/Or stiffer slow speed compression front shocks and stiffer setting slow speed rebound on rear shocks.

And/Or too aggressive driving line entering corners (too hot in). Driving instructor's input/feelings?



I disagree with you on needing bigger torsion bars. I've got plenty of wheel rate between the TB's and sway bar, I just need that wheel rate to come in sooner. Solid end links, maybe?

That being said, larger TB's would be easier to align. Just if I make that move now, I'll upset the balance I have, and will need to replace a second component as well.

None of the 4 instructors that got in the car had any complaints about the handling of the car; quite the opposite- I think they were all impressed. My main instructor spent a good amount of time feeling the car out, including evaluating the suspension set up and response. His only complaint was the throttle engagement (too aggressive).

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I've run Super Sports on both my 3500lb 69 Barracuda and my 2013 3700lb Mustang GT and to be honest, I think your tire wear isn't really abnormal. When you track a heavy car on a 300 treadware street tire, with an alignment that is remotely streetable, the outside of the tire is going to wear faster. I've found the pressure sweet spot for my SuperSports to be 38/34 on a road course, and 32/30 on a shorter autocross track. I have since switched to Falken RT615Ks and found the sidewalls to be stiffer than the Michelins, and that has improved the vagueness on turn-in you described. The new Dunlop Z2 will be the next tire I try, particularly since you can dismount them and run them on the other side of the car to equalize wear....



Thanks for the heads up! I went ahead and flipped the more worn set and put them on the rear. Will probably give up some traction with the 'wrong' compound facing out, but my set up can stand to lose a little traction in the rear and still be fine.

38/34 for super sports- is that cold or hot?

Oh yeah- my tire guy agreed with you- didn't think the wear was that abnormal. Shoot, the inner to outer main tread wear was only 2/32 off (7/32 vs 5/32). He indicated wearing through the side block wasn't a concern to him.

-'02 Dodge Viper Ex-World Challenge racecar
-'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course