996tt handling...advice please.
Discussion
Hi all,
I'm fairly new to my 996tt which I love to bits, but i'm not sure if I have a slight handling problem or it's just me expecting too much.
The car is fitted with michelin sports tyres all round and are about 50% worn.
The car handles great at low speed, it accelerates and brakes in a straight line and corners like it on rails.
However, once I get over 100mph (fairly rare) the car starts to feel like its running on a rutted surface. I can feel the car kicking slightly from side to side as if it is trying to stay inside two ploughed grooves in the road. Thats about the best I can describe it. I get the same sensation at high speed on long, slight curves. It reminds me somewhat of the instabilty you can get when you drive at high speed with all the windows down and the car is turbulent.
And yes, the spoiler is rising.
Can anyone throw any light on to it?
Do I need the Geo setting up or am I being a nancy.
I'm fairly new to my 996tt which I love to bits, but i'm not sure if I have a slight handling problem or it's just me expecting too much.
The car is fitted with michelin sports tyres all round and are about 50% worn.
The car handles great at low speed, it accelerates and brakes in a straight line and corners like it on rails.
However, once I get over 100mph (fairly rare) the car starts to feel like its running on a rutted surface. I can feel the car kicking slightly from side to side as if it is trying to stay inside two ploughed grooves in the road. Thats about the best I can describe it. I get the same sensation at high speed on long, slight curves. It reminds me somewhat of the instabilty you can get when you drive at high speed with all the windows down and the car is turbulent.
And yes, the spoiler is rising.
Can anyone throw any light on to it?
Do I need the Geo setting up or am I being a nancy.
Mine doesn't do this - check :
1) Tyres (tread, N rating same all round, size is right) I bought a 996C2 years ago & chap had decided to fit different N rating and indeed different makes to the front & rear, plus the rears were the wrong size - made the car handle like a dog.
2) Geometry - get it all lazer aligned (I was told every 18 months by an independant)
3) Check bits of suspension that can wear - drop links, bushes etc - quite easy to check up on a ramp by someone who knows what they are looking at.
I am actually always impressed by the TT's very high speed stability, much better than either my C2 (once sorted, which always felt light at the front) and my C4S
Good luck.
1) Tyres (tread, N rating same all round, size is right) I bought a 996C2 years ago & chap had decided to fit different N rating and indeed different makes to the front & rear, plus the rears were the wrong size - made the car handle like a dog.
2) Geometry - get it all lazer aligned (I was told every 18 months by an independant)
3) Check bits of suspension that can wear - drop links, bushes etc - quite easy to check up on a ramp by someone who knows what they are looking at.
I am actually always impressed by the TT's very high speed stability, much better than either my C2 (once sorted, which always felt light at the front) and my C4S
Good luck.
i had pirelli p zeros on my c2 and due to the soft(ish) nature of the tyre wall they tended to tramline quite badly at speed especially on country roads. i fitted a different make and bingo the handling was transformed
my current turbo is running bridgestones at they handle great and i have had none of the problems you refer to bozie
it maybe something as simple as he tyres although if they are only half worn i would suggest a geo check will be a far cheaper test than replacing a set of boots.
my current turbo is running bridgestones at they handle great and i have had none of the problems you refer to bozie
it maybe something as simple as he tyres although if they are only half worn i would suggest a geo check will be a far cheaper test than replacing a set of boots.
Thanks for all the info. Sounds like a Geo check may be a good starting point.
Interesting to hear the comments on stability, at the moment, my Saab handles better at high speed.
All the tyres are the same and N rated and the correct size.
If and when I go for new boots, what would you recommend. I thought the michelins were the tyre of choice for the 996tt.
Just need to find a good indy thats not a million miles from Stoke.
Interesting to hear the comments on stability, at the moment, my Saab handles better at high speed.
All the tyres are the same and N rated and the correct size.
If and when I go for new boots, what would you recommend. I thought the michelins were the tyre of choice for the 996tt.
Just need to find a good indy thats not a million miles from Stoke.
Karnivor said:
Thanks for all the info. Sounds like a Geo check may be a good starting point.
Interesting to hear the comments on stability, at the moment, my Saab handles better at high speed.
All the tyres are the same and N rated and the correct size.
If and when I go for new boots, what would you recommend. I thought the michelins were the tyre of choice for the 996tt.
Just need to find a good indy thats not a million miles from Stoke.
Near Stoke are JMH Automotive-I used them alot and he (Jason)is excellent-a proper thourough job. They are in Holmes Chapel. There are others in the Warrington area but I am sure someone will tell you where/who. Interesting to hear the comments on stability, at the moment, my Saab handles better at high speed.
All the tyres are the same and N rated and the correct size.
If and when I go for new boots, what would you recommend. I thought the michelins were the tyre of choice for the 996tt.
Just need to find a good indy thats not a million miles from Stoke.
The other thing is, even though all the tyres are the same, when mine went past a certain level of wear, they rapidly went off. A new set can make an amazing difference. And as far as I am concerned the Michelin Pilot Sports cannot be beaten.
I think Porsche recommend changing tyres at 3mm, despite the legal limikt being well under that.
Also double check the wheels. Again on my C2 the chap had bought a set of non porsche alloys, very good copies but a lot heavier than the proper rims and ruined the handling.
Probably a long shot but worth a check.
Also double check the wheels. Again on my C2 the chap had bought a set of non porsche alloys, very good copies but a lot heavier than the proper rims and ruined the handling.
Probably a long shot but worth a check.
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