Anyone have a chance to drive srt/track pk and TA hard?

[KickAsp]

Wondering if anyone has had a chance to drive both an SRT with track pack and a TA hard on the track? Is the
TA that much improved? With my srt trk pk the rear is def a little jumpy/loose on hard turn in and hard acceleration in low gears. A few guys also commented on the rear in the TA's. Anybody have the chance to experience both?

[Bruce H.]

The TA doesn't have a loose rear on turn-in at all that I've heard or experienced. What's been reported, and I've experienced, is it brief rear wiggle at very high speed when quickly lifting off the gas and going to brake. No problem with acceleration on tires once heated to track temps. Keep in mind that the fronts heat much quicker than the rears due to more heat from steering and higher braking loads. 355's take a lot to fully heat up.

[05Commemorative]

my experience (and I know it seems counter) is the rears heat up faster. Start the car with even pressures at the beginning of a session, then check them at the end of a 30min session. You will notice the rears a couple pounds higher. Car can go from pushy, to neutral, to loose all in a 30min session based upon that balance of pressure in the tires.

I am guessing his statement of jumpy/loose on hard turn in is the same as what you described as wiggle lifting off the gas and going to brake (which you would do right before/part of turn in).

[Stealth]

When you lift of the throttle and apply the brakes (front-biased) on a rear wheel drive car, this unweights the car and makes the rear end light--most any car. Are you Gen V owners talking about something else? Something unsettling? My Gen IV has no unsettled rear on braking, turn in or otherwise. Is this a suspension issue? Alignment? ???

[FLATOUT]

No issues with mine.

[05Commemorative]

I think he is referring to at the limit on a track. Every viper I have ever driving hard at the track (gen2, 3, 4, 5) all had this issue at the limit and had to adjust out as best possible with tire pressure, rear alignment toe and settings if have adjustable Moton or MCS suspension.

I think more extreme on a viper because of the huge tires and grip then going to a very "unweighted state" where much less so.

[FLATOUT]

Drove mine hard on track 3 days ago, and no issues. I was referring to track time.

[Bruce H.]

my experience (and I know it seems counter) is the rears heat up faster. Start the car with even pressures at the beginning of a session, then check them at the end of a 30min session. You will notice the rears a couple pounds higher. Car can go from pushy, to neutral, to loose all in a 30min session based upon that balance of pressure in the tires.

I am guessing his statement of jumpy/loose on hard turn in is the same as what you described as wiggle lifting off the gas and going to brake (which you would do right before/part of turn in).

I started with 29 psi and then measured 37.0 and 37.5 across the front and 36.0 and 36.0 across the rear at the end of a 30 minute session last week, but results will vary based on track and driver of course. I would hope when he said "on hard turn in" he didn't actually mean on throttle lift and hard straight line braking which is entirely different...but maybe the OP could clarify to avoid confusion.