light steering

[thstone]

I haven't noticed any particular lightness in the steering at over 100mph. Last weekend at the track I estimate that I did ~200 runs at over 100mph (twice each lap for ~100 laps cumulative). Car was firmly planted and rock solid. Front straight top speed was around 122mph and back straight top speed was around 115mph.

Like San Rensho I run the tire pressures the same all around so you might give that a try (easy and super cheap).

(I hope that it doesn't sound like I'm exaggerating, here is how I came up wth that number: six 30-min sessions over the weekend (plus two shorter sessions that I didn't count) = 180 mins track time divided by 1:45 ave lap time = 102 laps x 2 runs over 100mph per lap = 204.)

[Topless]

I spent the weekend at the Fontana Roval with top speeds approaching 130 mph and apexing turn 2 at 125 mph. No lightness to the steering. I have felt what you mean though. In a stiff 30kt crosswind about 30 deg off the nose at speed I felt like the front of the car was lifting a bit. I lost turn in confidence and simply slowed down as I had no desire to put it on the roof. We have no real aero downforce in a stock Boxster and a crosswind may be unseating the car at 100 mph.

Time for a chin spoiler and rear wing?

[pothole]

Originally Posted by thstone

I haven't noticed any particular lightness in the steering at over 100mph. Last weekend at the track I estimate that I did ~200 runs at over 100mph (twice each lap for ~100 laps cumulative). Car was firmly planted and rock solid. Front straight top speed was around 122mph and back straight top speed was around 115mph.

I would agree that lightness at speed isn't a particular issue. But in general, it is over assisted for my taste. The steering weight in something like a 968 is perfect - and much heavier than a box.

[Meir]

someone needs to invent a mod that cancel the power steering at high speed

[stephen wilson]

My guess would be aerodynamic lift, the car actually is getting "light", combined with the fact that steering inputs are "amplified" at higher speeds.

[jayspeed999]

Originally Posted by stephen wilson

My guess would be aerodynamic lift, the car actually is getting "light", combined with the fact that steering inputs are "amplified" at higher speeds.

Going back to this REALLY old thread, I'm having the same issue with my 2001 "S". I also agree that it feels like an aerodynamic lift. Not a great feeling. I wonder if the spoiler extension at 75MPH has anything to do with it.

[thstone]

Originally Posted by jayspeed999

Going back to this REALLY old thread, I'm having the same issue with my 2001 "S". I also agree that it feels like an aerodynamic lift. Not a great feeling. I wonder if the spoiler extension at 75MPH has anything to do with it.

You could pull the spoiler fuse and try it with the spoiler down to see if it makes any difference. You'll get a rear spoiler fault on the dash but it will clear the next time that you start the car. Just remember that the rear spoiler is there for a reason...

[Gilles]

could be an alignment issue?

Clearly remember Steve Alarcón questioning, which track are you going to run..?

Basically regarding if you wanted a quick steering or stability at high speed