Driving at high speed (feels unsafe)


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Thread: Driving at high speed (feels unsafe)

  1. #1
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    Driving at high speed (feels unsafe)

    I did a track day recently and noticed at around 190km/h the car felt like it was floating and about to lose control. This was on a long straight at a local track (smooth track, not really uneven).

    I wonder what it is? The car didn’t feel planted, almost as if the front was like lifting off the ground. Is this a tire pressure issue? Fronts were like 33 psi warm.
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  3. #2
    Senior Member mngolfer's Avatar
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    There is something wrong. I have had my car at the track multiple times at 156 mph/256k/h and I have commented it felt like I was going 40 mph it was so rock solid.
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  4. #3
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    Re: Driving at high speed (feels unsafe)

    What tires? My michelins feel a bit softer at the side wall.

    Although not the fastest I've gone I feel the need to hit the sport suspension mode after about 130 mph to really feel the road. If I remember right that's like 210-220 for you.

    Have you check for mag ride leaks? I had a similar thing happen on my daily where the air ride was just plain defective from the factory. It was heavy as a tank and felt like a waterbed because of it.

    Also have you had any hard impacts? Sometimes suspension components seem to wear out quickly from some areas. Or it could be a simple alignment.

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  6. #4
    Senior Member thedragonseven's Avatar
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    Re: Driving at high speed (feels unsafe)

    190km/h is about 118MPH.

    I was doing 120MPH+ on several stretches of highway in my 2017 Plus just yesterday and today, no float at all.

  7. #5
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    I have the Pzero’s. It’s a really weird feeling, like car is gonna lose control (the front feels light).
    2017 Audi R8 V10 Plus (Dynamite Red)

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    Re: Driving at high speed (feels unsafe)

    Quote Originally Posted by ramoq View Post
    I have the Pzero’s. It’s a really weird feeling, like car is gonna lose control (the front feels light).
    P Zeros suck

    Replace with pilot super sport (they dont make 4s in our tire size IIRC, otherwise 4s is a bit better), or use sport cup 2 or something similar if you dont daily drive the car

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    Senior Member Trev450's Avatar
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    Re: Driving at high speed (feels unsafe)

    P Zeros are rubbish as already said but before you bin them set your tyre pressures to 36 F and 34 R from cold and have an alignment check done.
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  10. #8
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    Re: Driving at high speed (feels unsafe)

    Something is wrong, please don’t drive that fast till your sorted it out, it is indeed unsafe. First get a very good suspension and alignment shop. Get full suspension check including struts and make proper alignment
    Second, less likely, but still check tire pressure and just in case perform high speed wheel balance
    R8 first and second gen are very good handling cars and should feel safe even at 330kmh

  11. #9
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    Quote Originally Posted by nabizzy View Post
    Quote Originally Posted by ramoq View Post
    I have the Pzero’s. It’s a really weird feeling, like car is gonna lose control (the front feels light).
    P Zeros suck

    Replace with pilot super sport (they dont make 4s in our tire size IIRC, otherwise 4s is a bit better), or use sport cup 2 or something similar if you dont daily drive the car

    Enjoy it in good health!
    I just got new tires. The car had the P Zeroes on it, and needed replacing. I picked up Michelin PS 4s from TireRack. You're right that they don't make them in all sizes, unfortunately (couldn't get a set for my GT350), but luckily they do make them for our R8s.
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  12. #10
    Senior Member thedragonseven's Avatar
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    Re: Driving at high speed (feels unsafe)

    Quote Originally Posted by Crashspeeder View Post
    ...I picked up Michelin PS 4s from TireRack...
    These 4S sizes are available for Gen2 19" wheels:

    Front: 245/35ZR19 (93Y) XL - [Mercedes Spec]
    Rear: 295/35ZR19 (104Y) XL - [Mercedes Spec] - No 305's



    And these 4S sizes are available for Gen2 20" wheels:

    Front: 245/30ZR20 (90Y) XL - [Generic Michelin Spec]
    Rear: 295/30ZR20 (103Y) XL - [Generic Michelin Spec]

    Front: 245/30ZR20 (90Y) XL - [Audi Spec]
    Rear: 295/30ZR20 (103Y) XL - [Audi Spec]

    Front: 245/30ZR20 (90Y) XL - [Generic Michelin Spec]
    Rear: 305/30ZR20 (103Y) XL - [Generic Michelin Spec]

    Front: 245/30ZR20 (90Y) XL - [Audi Spec]
    Rear: 305/30ZR20 (103Y) XL - [Audi Spec]
    Last edited by thedragonseven; 09-14-2019 at 09:26 AM.

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