Jittery Ride

Sailor · 07-14-2007, 04:26 PM

Last week I had the opportunity to test drive an E90 328i and 335i back to back; both were equipped with AT, ZSP. Both are terrific cars (which they should be given what BMW wants for 'em), but I noticed that the 328i, in particular, has a jittery ride - it seemed far less compliant than that of my '03 325i, also equipped with a Sports Package. Anyone know whether the roughness I noticed is due to the run flats, a more agressive suspension in the new car, too much air in the tires or some other issue?

Thanks,

Jerry

wj4 · 07-14-2007, 04:29 PM

Jittery at all times? The E9x is known to be jolting at times in idle.

calle_enell · 07-14-2007, 04:32 PM

If you have the ZSP, you need to get rid of the RFTs to get a smooth ride.
E9X without ZSP on stock 16" RFTs rides very well, but as you get the 17" and ZSP on, it is really nice to change to non-RFT's.

It is a world of diffrence. I just changed to Michelin PS2 and its a "new" car. (Feels lighter on its wheels, much much much smoother and more responsive)

sambonator · 07-14-2007, 04:38 PM

I had an '03 e46 330i sedan with sport package, and the suspension felt a lot stiffer than on my '07 335i sedan with sport package.
Even with the sport package and runflats its quite a smooth ride.

07-14-2007, 04:26 PM	#1
Sailor Enlisted Member 0 Rep 40 Posts Drives: '08 E90 328i Join Date: Jul 2007 Location: Coastal Texas iTrader: (0)	Jittery Ride Last week I had the opportunity to test drive an E90 328i and 335i back to back; both were equipped with AT, ZSP. Both are terrific cars (which they should be given what BMW wants for 'em), but I noticed that the 328i, in particular, has a jittery ride - it seemed far less compliant than that of my '03 325i, also equipped with a Sports Package. Anyone know whether the roughness I noticed is due to the run flats, a more agressive suspension in the new car, too much air in the tires or some other issue? Thanks, Jerry
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07-14-2007, 04:29 PM	#2
wj4 Major General 335 Rep 7,719 Posts Drives: E90 manual 335i Join Date: Nov 2006 Location: Burbank, CA iTrader: (8)	Jittery at all times? The E9x is known to be jolting at times in idle.
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07-14-2007, 04:32 PM	#3
calle_enell Car keeps stalling out...5 times now. 9 Rep 248 Posts Drives: E90 328i Join Date: Jun 2007 Location: USA iTrader: (0)	If you have the ZSP, you need to get rid of the RFTs to get a smooth ride. E9X without ZSP on stock 16" RFTs rides very well, but as you get the 17" and ZSP on, it is really nice to change to non-RFT's. It is a world of diffrence. I just changed to Michelin PS2 and its a "new" car. (Feels lighter on its wheels, much much much smoother and more responsive)
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07-14-2007, 04:38 PM	#4
sambonator Samtaro! 124 Rep 2,601 Posts Drives: 2014 F32 N55 Alpinweiß Join Date: May 2007 Location: Newport Beach, CA, USA iTrader: (7)	I had an '03 e46 330i sedan with sport package, and the suspension felt a lot stiffer than on my '07 335i sedan with sport package. Even with the sport package and runflats its quite a smooth ride.
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