Brand new 328i feels unstable at 80mph...?

AEsco48 · 05-30-2007, 08:36 AM

Perfectly paved road, no wind

Car does not have sports package...

at 80mph it feels very light and floaty, wants to wonder off, and at 130 its the same thing

My 2004 M3 feels better at 170 then the 328 at 80, our old Jeep Grand Cherokee feels better at 130 then the 328i at 80mph...

I am assuming the alignment is fine from the factory, tire pressures are fine...

I would go crazy driving this car on a road trip...

dougman · 05-30-2007, 09:05 AM

Something's definitely off. Start with alignment, and ask them to print out the before and after alignment specifications.

dmboone25 · 05-30-2007, 09:08 AM

That's definately weird--mine feels very good at high speeds, and has since day one. I would get it checked out.

Richwm · 05-30-2007, 09:13 AM

Quote:

Originally Posted by AEsco48

Perfectly paved road, no wind

Car does not have sports package...

at 80mph it feels very light and floaty, wants to wonder off, and at 130 its the same thing

My 2004 M3 feels better at 170 then the 328 at 80, our old Jeep Grand Cherokee feels better at 130 then the 328i at 80mph...

I am assuming the alignment is fine from the factory, tire pressures are fine...

I would go crazy driving this car on a road trip...

What is your tire presure set to? Then have your alignment checked. Dont assume the allignment is good it could be bad from the factory.

STE92VE · 05-30-2007, 09:20 AM

Quote:

Originally Posted by AEsco48

Perfectly paved road, no wind

Car does not have sports package...

at 80mph it feels very light and floaty, wants to wonder off, and at 130 its the same thing

My 2004 M3 feels better at 170 then the 328 at 80, our old Jeep Grand Cherokee feels better at 130 then the 328i at 80mph...

I am assuming the alignment is fine from the factory, tire pressures are fine...

I would go crazy driving this car on a road trip...

Jeep Grand Cherokee @ 130.....

Brand new 328 @ 130....guess you're not following recommended break-in.

M3 @ 170...where you running at that speed...Officer Bob wants to know.

RANJHA · 05-30-2007, 10:42 AM

just take it to the dealer - let them figure it out...my wheels werent balanced properly in the beginning so my streering wheel was shaking and that was after I bought the car...no biggie

bronco · 05-30-2007, 10:56 AM

ughhhhh...???? not normal

LarryK1000 · 05-30-2007, 10:57 AM

It's the run flat tires.

When I replaced mine with standard Pirelli P-Zero Nero's all of those unstable feelings disappeared. It's like a new car and rides like my 740 and 528.

Larry

M3350Z · 05-30-2007, 10:58 AM

I would get it checked out. I don't think it's the runflats cuz I have runflats on my 335 and I was doin 100 mph on the highway and no one in the car could even tell. They thought I was doin 65

HyperM3 · 05-30-2007, 12:03 PM

Quote:

Originally Posted by M3350Z

I would get it checked out. I don't think it's the runflats cuz I have runflats on my 335 and I was doin 100 mph on the highway and no one in the car could even tell. They thought I was doin 65

Thats not the same thing as what the OP was talking about. My car feels exremely smooth and speed deceptive too. However, I also get the floatiness sometimes at high speed. The runflats just like to wander and will tramline at every chance they get. I found optimal PSI to be 35f/38r. Try it and see if you notice a difference.

Chi-town330 · 05-30-2007, 12:18 PM

is the car very new? reason I ask is because from what I have read on this forum, BMW overinflates the tires during transfer, so as to prevent flat spots while sitting on the ship, in lots, etc.

When I bought my car, it had 45psi all the way around, so I can only assume the dealership never reduced the pressure to the proper settings. I immediately dropped the tire pressure and noticed a difference in ride/handling, of course.

I have no idea if a symptom of over-inflation is what you commented on, but I thought I would pass this along (given a few folks mentioned tire pressure here).

Several other folks on the forum have commented on the abnormally high tire pressure when they bought the car, so it sounds like my situation wasn't that unique.

Mikes12985 · 05-30-2007, 04:13 PM

My 335i was always feeling good and stable...When I hit around 1k miles I hit 130 with my stock runflats and wheels and it felt great....this past saturday I hit 140 with my new 20inch wheels with the Pirelli Zeros and it felt great as well untill I hit a little dip in the highway is when I felt like I was a bit unstable but thats normal. Get it checked out. Mike.

ATG · 05-30-2007, 04:15 PM

Quote:

Originally Posted by HyperM3

Thats not the same thing as what the OP was talking about. My car feels exremely smooth and speed deceptive too. However, I also get the floatiness sometimes at high speed. The runflats just like to wander and will tramline at every chance they get. I found optimal PSI to be 35f/38r. Try it and see if you notice a difference.

What he said.

AndreyATC · 05-30-2007, 04:39 PM

New tires require some break in also
They are not as sticky as after you put a few miles on them

ehhhwik · 05-30-2007, 04:42 PM

it could be alignment or tire balance/tires, i got my non-zsp e92 328i's rfts replaced under warrenty

e92phreak · 05-30-2007, 04:43 PM

Quote:

Originally Posted by LarryK1000

It's the run flat tires.

When I replaced mine with standard Pirelli P-Zero Nero's all of those unstable feelings disappeared. It's like a new car and rides like my 740 and 528.

Larry

I haven't had any issues with the RFs. Was rolling into work and looked at the speedometer and didn't realize I was over 100 LOL...

Could be that I'm used to the EXTREMELY bumpy ride in my E46 (Bilstein PSS9s with Volks).

RANJHA · 05-30-2007, 06:12 PM

lol possibly

chbrules · 05-30-2007, 06:25 PM

Something is off, get it checked out. My 325i felt solid as a rock at 130+

05-30-2007, 08:36 AM	#1
AEsco48 New Member 4 Rep 28 Posts Drives: 04 E46 M3 Join Date: Apr 2007 Location: MIA iTrader: (0)	Brand new 328i feels unstable at 80mph...? Perfectly paved road, no wind Car does not have sports package... at 80mph it feels very light and floaty, wants to wonder off, and at 130 its the same thing My 2004 M3 feels better at 170 then the 328 at 80, our old Jeep Grand Cherokee feels better at 130 then the 328i at 80mph... I am assuming the alignment is fine from the factory, tire pressures are fine... I would go crazy driving this car on a road trip...
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05-30-2007, 09:05 AM	#2
dougman Second Lieutenant 27 Rep 228 Posts Drives: '07 E92 328 --> 2010 E92 M3! Join Date: Apr 2007 Location: Bay Area iTrader: (0)	Something's definitely off. Start with alignment, and ask them to print out the before and after alignment specifications.
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05-30-2007, 09:08 AM	#3
dmboone25 Lieutenant General 4972 Rep 10,200 Posts Drives: 2024 Golf R / 2022 718 Spyder Join Date: Sep 2006 Location: Dallas, TX iTrader: (0) Garage List 2007 E92 328i [10.00] 2007 328i [10.00]	That's definately weird--mine feels very good at high speeds, and has since day one. I would get it checked out. __________________ Past rides: 2016 981 BGTS, 2020 MINI JCW, 2017 F80, 2015 981 CS, 2014 F22 235, 2011 E82 135, 2008 E82 135, 2007 E92 328, 2007 E92 328 (My lady drives an OG M2. So does my dad)
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05-30-2007, 10:42 AM	#6
RANJHA Lieutenant Colonel 36 Rep 1,569 Posts Drives: BMW E90 Join Date: May 2007 Location: Chicago, IL iTrader: (14)	just take it to the dealer - let them figure it out...my wheels werent balanced properly in the beginning so my streering wheel was shaking and that was after I bought the car...no biggie __________________ Disclaimer: Above material may be complete bullshit and is not intended for use by conservatives or children under the age of five.
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05-30-2007, 10:56 AM	#7
bronco Colonel 76 Rep 2,104 Posts Drives: e92 Join Date: Nov 2006 Location: Atlanta iTrader: (0)	ughhhhh...???? not normal __________________ SaaS - The world of tomorrow is already here...www.saaschronicles.com
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05-30-2007, 10:57 AM	#8
LarryK1000 Larry from Los Angeles 14 Rep 296 Posts Drives: 2006 330i Join Date: Mar 2006 Location: Los Angeles (SFV) iTrader: (0)	It's the run flat tires. When I replaced mine with standard Pirelli P-Zero Nero's all of those unstable feelings disappeared. It's like a new car and rides like my 740 and 528. Larry
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05-30-2007, 10:58 AM	#9
M3350Z Second Lieutenant 39 Rep 270 Posts Drives: E92 335i MT Join Date: Mar 2007 Location: New York iTrader: (0)	I would get it checked out. I don't think it's the runflats cuz I have runflats on my 335 and I was doin 100 mph on the highway and no one in the car could even tell. They thought I was doin 65
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05-30-2007, 12:18 PM	#11
Chi-town330 First Lieutenant 9 Rep 308 Posts Drives: E90 330i Join Date: Feb 2007 Location: Chicago iTrader: (0) Garage List 2006 E90 330i [0.00]	is the car very new? reason I ask is because from what I have read on this forum, BMW overinflates the tires during transfer, so as to prevent flat spots while sitting on the ship, in lots, etc. When I bought my car, it had 45psi all the way around, so I can only assume the dealership never reduced the pressure to the proper settings. I immediately dropped the tire pressure and noticed a difference in ride/handling, of course. I have no idea if a symptom of over-inflation is what you commented on, but I thought I would pass this along (given a few folks mentioned tire pressure here). Several other folks on the forum have commented on the abnormally high tire pressure when they bought the car, so it sounds like my situation wasn't that unique.
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05-30-2007, 04:13 PM	#12
Mikes12985 Lieutenant 36 Rep 526 Posts Drives: X3M, 530i, X7 (on order) Join Date: Apr 2007 Location: NY (LI) iTrader: (10)	My 335i was always feeling good and stable...When I hit around 1k miles I hit 130 with my stock runflats and wheels and it felt great....this past saturday I hit 140 with my new 20inch wheels with the Pirelli Zeros and it felt great as well untill I hit a little dip in the highway is when I felt like I was a bit unstable but thats normal. Get it checked out. Mike.
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05-30-2007, 04:39 PM	#14
AndreyATC Banned 99 Rep 1,828 Posts Drives: 2016 Tesla Model X P90DL Join Date: Oct 2006 Location: Near NYC iTrader: (2) Garage List 2016 Tesla Model X [0.00] 2015 Tesla Model S ... [9.00]	New tires require some break in also They are not as sticky as after you put a few miles on them
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05-30-2007, 04:42 PM	#15
ehhhwik Brigadier General 114 Rep 3,431 Posts Drives: 09' BMW 335d, 07' BMW E92 328i Join Date: Oct 2006 Location: Vancouver, BC iTrader: (5)	it could be alignment or tire balance/tires, i got my non-zsp e92 328i's rfts replaced under warrenty __________________ Current: 09' E90 335d - Titanium Silver/Black Leatherette/Sports Package/6AT Paddle Shift/USB Integration/19" Staggered Breyton GT Gloss Black Retired: 07' E92 328i (Jet Black)
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05-30-2007, 06:12 PM	#17
RANJHA Lieutenant Colonel 36 Rep 1,569 Posts Drives: BMW E90 Join Date: May 2007 Location: Chicago, IL iTrader: (14)	lol possibly __________________ Disclaimer: Above material may be complete bullshit and is not intended for use by conservatives or children under the age of five.
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05-30-2007, 06:25 PM	#18
chbrules MSVConrad++ 54 Rep 778 Posts Drives: E90 2006 325i \| E92 2007 335i Join Date: Dec 2006 Location: Peaches iTrader: (0)	Something is off, get it checked out. My 325i felt solid as a rock at 130+
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