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Problems on speed 180-200km

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Old Jul 10, 2007 | 02:20 AM
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So, problem with drive on speed 180-200.
Car living her life. Сar go from one side to another side of road. Forward weels, like in the air, no jn the road.

My friends tell me 3 variants:

1 - Airdynamik(M-pak + AS rear spoiler) I think it's true

2 - Weels Danlop SP9000 245/45-R18


My car: 26 000km, 1.6 year.


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Old Jul 10, 2007 | 05:13 AM
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Originally Posted by Blacky5' post='445607' date='Jul 10 2007, 02:20 PM
So, problem with drive on speed 180-200.
Car living her life. Сar go from one side to another side of road. Forward weels, like in the air, no jn the road.

My friends tell me 3 variants:

1 - Airdynamik(M-pak + AS rear spoiler) I think it's true

2 - Weels Danlop SP9000 245/45-R18
My car: 26 000km, 1.6 year.
Washboard is the reason I think. Here in Moscow it's a real problem and in suburbs also. Moscow belt road sometimes is a nightmare. Espesially on wide, low-profile tires.
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Old Jul 10, 2007 | 05:45 AM
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I agree. Sounds like tramlining. There's nothing wrong with the car, it just needs better roads, due to wide, low-profile tires.
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Old Jul 10, 2007 | 06:40 PM
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Originally Posted by big_ipaq' post='445639' date='Jul 10 2007, 09:45 AM
I agree. Sounds like tramlining. There's nothing wrong with the car, it just needs better roads, due to wide, low-profile tires.
Disagree. At slower speeds (60-70 mph/100-100 km/h) wide rears do tramline a bit but at higher speeds (120mph/190km/h) and higher no tramlining is noticeable. At least not on my car. It is rock solid all the way to 140mph, the highest speed I ever taken it to. At higher speeds you kind of fly above the road. No imperfections are noticeable.
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Old Jul 11, 2007 | 10:07 AM
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Originally Posted by Blacky5' post='445607' date='Jul 10 2007, 11:20 AM
So, problem with drive on speed 180-200.
Car living her life. Сar go from one side to another side of road. Forward weels, like in the air, no jn the road.

My friends tell me 3 variants:

1 - Airdynamik(M-pak + AS rear spoiler) I think it's true

2 - Weels Danlop SP9000 245/45-R18
My car: 26 000km, 1.6 year.

Try reducing the front tyre pressures a little. I find my car very sensitive to tyre pressures (19" OEM 166's, PS2's nonrft), the result being that the car feels like it's caught in a bad cross-wind.
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Old Jul 11, 2007 | 11:20 AM
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Originally Posted by Blacky5' post='445607' date='Jul 10 2007, 01:20 PM
So, problem with drive on speed 180-200.
Car living her life. Сar go from one side to another side of road. Forward weels, like in the air, no jn the road.
2 - Weels Danlop SP9000 245/45-R18
My car: 26 000km, 1.6 year.
It's your 18" too wide RF Dunlops and the Russian shitty roads combined.

Get 225/50 17" non RF tyres (Bridgestone Potenzas) and the spare.

Note also that the tyre pressures should be at max or more when speeding above 200 km/h!
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Old Jul 13, 2007 | 12:16 AM
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So friends, I visited diler.
"It's truble all series(E87, 90-93, 60). Very light constukshion(1570kg) and wing+not ideal rouds give this effekt(((.


Today go on Kievskaia motorway(ideal roud for hight speed in Moscow) and my car...... Looks not very good again

Mayby it's real spoiler????
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Old Jul 13, 2007 | 01:08 AM
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I have the same ACS spoiler at the back and I have done over 230km in the car and it had been OK but my are 19" not 18", so it maybe is the road and not the spoiler.
Also check your wheels psi, like the other guy say must be high for these kind of speed
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Old Jul 13, 2007 | 08:54 AM
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Originally Posted by Blacky5' post='447110' date='Jul 13 2007, 10:16 AM
So friends, I visited diler.
"It's truble all series(E87, 90-93, 60). Very light constukshion(1570kg) and wing+not ideal rouds give this effekt(((.
Today go on Kievskaia motorway(ideal roud for hight speed in Moscow) and my car...... Looks not very good again

Mayby it's real spoiler????
Roads here are just as crap and I've done those kind of speeds quite often. It's not a spoiler issue. These cars are designed to be rock solid at that kind of speed without any spoilers. Do you know the car's history - any crash repairs? Is it definitely straight?

I changed from RFT's to regular tyres and on East European roads it really does help. The sidewalls are much less stiff and adapt to the valleys and ridges that the trucks have pounded into the roads.
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Old Jul 13, 2007 | 09:30 AM
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Originally Posted by PoleApart' post='447297' date='Jul 13 2007, 07:54 PM
Do you know the car's history - any crash repairs? Is it definitely straight?

I changed from RFT's to regular tyres and on East European roads it really does help. The sidewalls are much less stiff and adapt to the valleys and ridges that the trucks have pounded into the roads.
Good points PoleApart

In Blacky5's case it is the tyres!
The E60 just don't work nicely on shitty roads with RF 18" tyres.

The car weight has nothing to do with it nor the "missing" rear spoiler.
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