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'06 330 vs '07 328 or 335

29 messages,  Last post on Feb 14, 2007 at 2:57 PM

You are in the BMW 3-Series Forum.

What is this discussion about? BMW 3 Series, BMW, Sedan

Messages Page 4 of 4

#25 of 29 Re: 3 series versus 5 series [shipo] by bruceomega

Feb 14, 2007 (12:52 pm)

Replying to: shipo (Feb 14, 2007 10:18 am)
Shipo,
 
I tend to agree given they've also gone to RFTs on the X5.
 
If they do switch to RFTs, do you know if there is anything in the 5 series that would make the car less susceptible to the hard hits I occasionally experience in the 3 series?
 
BMW changed the design of the front suspension of the X5 to compensate for going to RFTs. Is anything analogous to this plausible for the revised 5 series?
 
Thanks
Bruce

#26 of 29 Re: 3 series versus 5 series [bruceomega] by shipo

Feb 14, 2007 (1:31 pm)

Replying to: bruceomega (Feb 14, 2007 12:52 pm)
"If they do switch to RFTs, do you know if there is anything in the 5 series that would make the car less susceptible to the hard hits I occasionally experience in the 3 series?"
 
Built into the nature of the 5-Series beast, there is slightly more sidewall in all tire sizes, and that said sidewall differences can absorb road hazard shock better than can the tires on the 3-Series. Will it be enough for your tastes? Unknown. You might have to talk your dealer into letting you take an extended (i.e. over night) test drive.
 
"BMW changed the design of the front suspension of the X5 to compensate for going to RFTs. Is anything analogous to this plausible for the revised 5 series?"
 
I've been hearing about these so called RFT tuned suspensions from BMW and other manufacturers, and other than the Odyssey PAX suspension (which has to deal with the massively porky 75 pound PAX wheel and tire assemblies), I've never seen any concrete evidence to suggest that suspensions have been in any altered. This isn't to say they haven't, I've just never been presented with any good evidence to the contrary. Anyway, it's a pretty safe bet that ANY 5-Series, RFT equipped from the factory or not, will handle and ride better with GFTs of the same size.
 
Hmmm, here again, I'm not at all sure I've been much of a help.
 
Best Regards,
Shipo

#27 of 29 Re: 3 series versus 5 series [shipo] by kyfdx@Edmunds HOST

Feb 14, 2007 (1:42 pm)

Replying to: shipo (Feb 14, 2007 1:31 pm)
Hey, Shipo!!
 
That 5-series in NJ is now for sale for $17,500..

#28 of 29 Re: 3 series versus 5 series [kyfdx] by shipo

Feb 14, 2007 (1:50 pm)

Replying to: kyfdx@Edmunds (Feb 14, 2007 1:42 pm)
Thanks, I'll take a peek.

#29 of 29 Re: 3 series versus 5 series [shipo] by bruceomega

Feb 14, 2007 (2:57 pm)

Replying to: shipo (Feb 14, 2007 1:31 pm)
Shipo,
 
Yes, you are very helpful. I had not thought about the 5 using a different sidewall height compared to the 3 for differentiating it's ride quality with RFTs.
 
I read a road test on the new X5, and it may have been at Edmunds, saying BMW switched from struts to unequal length a-arms(?) specifically due to the RFTs. They said this is the first time BMW has not used struts in many years, and it was successful in providng a smooth ride despite the RFTs.
 
Anyway, probably now need to sit back and see what is actually on the new 5 series when it comes out.
 
Thanks
Bruce

Messages Page 4 of 4

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