what controls the road feel on the front end? I have springs that lowered the ride height to euro height... just had new tires installed ( yokohama advan sports) and alignment done.. but at high speeds over 85 mph.. car feels a little sloppy.. a lot of movement in steering wheel... can it be my new tires? i dont recall the same feel with my old conti's.. feels like steering wheel is light.. dont know how else to explain it..

thanks

 

Tires when new are still doing their initial "release" and can feel goofy.
Rather than guess, I will tell you to also get a good corner balance and alignment
and it should be drastically better. Mine feels rock stable at 195 mph. I have alot of
different components though. Good luck, the 996 TT should feel confidence inspiring,
unlike my old 993TT or 930...Wow.

MK

 

what does corner balance mean? I just had an alignment done after the tires were mounted

 

indeed get a good alignment and corner balance . will make a world of diff.

 

hey boca....check your air pressure too....these cars are very sensitive to air pressure. Mine felt soo sloppy when my pressures were off.

 

thanks ruffinit what pressure is best?

 

You say you got an alignment. Can you quote us the numbers on the
data sheet, or attach an image we can read of it?

 

I dont have the sheet with the numbers on it.. but it was done by a porsche shop... not a everyday repair garage

 

Something like this is not easy to fix over the net. I will give you my 2 cents you will hear many other additions and opinions.

First you need to give us some info about your car.

What MY and what is the mileage on the car
Has it had any of the suspension arms changed at any point in time, suspension/springs?
Does it have 100% stock bodywork

Is it stable in highish speed corners?
Do you feel the car nosediving too much when you brake and squatting when you accelerate
Is your steering wheel straight when you are going fast or does it pull to one side. If you are still on stock suspension for over 4 years or 40-50k miles regardless of aging, change all your suspension regardless, it might not be the cause but you will be safer doing so.

1- Most likely reason: check tire pressures. Put the factory settings, they are not the best but they will eliminate any issues if this is what is causing them. Don't remember what they are, you can check online.
2-Most likely you do not have corner balance issues, you need to be wayyyy off to feel it in straight line.
3- Check the caster and tow in your alignment settings. If they were per factory, you are fine, if the tech screwed up by mistake the toe or caster, the car will be unstable at speeds. Too much toe-out or too little caster will make the car lively at speeds.
4-Inspection of control arms, check the rubber bushings.
5-Inspection to see that nothing is loose, retorque all the suspension components.
6-If you have aftermarket front bumper or rear wing, make sure they are from a reputable source.
7-Is your differential ok, is there any noise or jerking on acceleration/decelration?
If all the above fail,
8-Don't drive fast

 

Great advice Jean...I would add...what springs are you using?...if you did not do coilovers, you could have handling problems.

 

they are H & R springs

 

What suspension components would you recommend replacing on a car with 60k+ miles? I have issues similar to the above and its 100% stock. Thanks

 

H&R springs have been known to have this issue....this is why most folks opt for coilovers instead of just springs...just springs is just bling....not performance.

 

what do coil overs cost?

 

I have the same issues with my H&R springs. I plan on getting coilovers soon. But did you only notice this after putting on the new tires?