Front end lift at 100mph +
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Joined: Nov 2004
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From: Aliso Viejo CA.
2010 E350 SP / Honda Crosstour / prior vehicles - C32 modded / C300 modded / Lincoln LS modded
Front end lift at 100mph +
Has anyone noticed the front gets light feeling and looses a bit of solidity at 110 mph or higher. should these cars have sufficient aerodynamics for high speeds. My c32 was great all the way to 155mph. freaks me out.
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
When you put those big 19s on there did you also drop the suspension? If you dropped the rear a bit more than the front, that could cause a bit more pressure underneath the car. A deeper lip spoiler would help but it may be more wheel/tire related that aerodynamics.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Have you messed with the suspension? - These cars are designed to be nose down - On all these forums I see people dumping the tail of the car too far. This allows too much air under the car at speed & messes with high speed stability. The 203s & 204s don't get light at speed if set up correctly. i.e. attitude = nose down tail up! Might look good with the tail dumped but it wrecks stability.
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From: Orlando, FL
2026 AMG GT63 Pro
Have you messed with the suspension? - These cars are designed to be nose down - On all these forums I see people dumping the tail of the car too far. This allows too much air under the car at speed & messes with high speed stability. The 203s & 204s don't get light at speed if set up correctly. i.e. attitude = nose down tail up! Might look good with the tail dumped but it wrecks stability.
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C
Must be something wrong with the car, my C200 CDI is rock solid stable at 120 mph on the Autobahn. Actually feels like it was designed to drive like that all day (and it probably was). Strange in fact how this car seems rather noisy at 80 mph, but then stays exactly the same when running at 120 mph.
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W204
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From: Waldfischbach-Bergalben, Germany
2008 MB C300 Sport (Mars Red)
No problems that I've noticed at upper speeds... Check out your PSI. Top speed for me was right around 133, then the electro-mommy took over the throttle for a few seconds...
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From: Waldfischbach-Bergalben, Germany
2008 MB C300 Sport (Mars Red)
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
That was a sort of "Gentlemen's Agreement" for many years but a lot of the high end models have jumped well above. As far as I know, most "regular" but still stout cars are relagated to 155MPH.
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2009 C350W on EDP
Ditto ....
Must be something wrong with the car, my C200 CDI is rock solid stable at 120 mph on the Autobahn. Actually feels like it was designed to drive like that all day (and it probably was). Strange in fact how this car seems rather noisy at 80 mph, but then stays exactly the same when running at 120 mph.
I also noted that steady speed MPH actually increased (per the onboard consumption display and actual miles/fuel used measurements) and peaked around 90 MPH.
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From: Bloomfield, CT
'08 C350
And "nope" to that too! 133 is the limit for the US spec C350 as well. And with the tire pressures correctly increased for the higher speed, it's rock solid with no front end lift or hint of instability.
