10-03-2013, 09:27 AM #1
A Chassis Rig Reveals Why the E90 and F30 Feel So Different
Ran across this great article from Car & Driver showing the differences between the F30 and E90 chassis. I thought it was a good read. I really hope they can address the electric steering feel with the M3/M4.
http://blog.caranddriver.com/a-tale-...-so-different/2011 E90 M3 \ Melbourne Rot Metallic
10-03-2013, 12:53 PM #2
This sums it up:
In summary, the most significant change from the E90 to the F30 results from the switch to electric power-steering assist, which diminishes feel. Body roll in the two cars is identical, but the use of rear-suspension understeer instead of larger tires in back may be why the new 328i feels less agile turning into corners. All of it adds up to a softer, tamer 3-series that’s more about luxury than fun.
Prefix edited to reflect general 3-Series.
Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale
10-03-2013, 01:12 PM #3
10-03-2013, 02:23 PM #4
Interesting they raised the CG of the F30 by an inch, but also raised the roll centers by an inch to keep the roll couple the same. This may help produce the same amount of roll per g, but I wonder if it does anything to the responsiveness of the car in transients as the CG is higher, or if that is canceled by the higher roll centers as well.
The wheel rates are lower in the F30 requiring thicker anti-roll bars to produce the same roll as the E90 per g. Generally I was under the impression running stiffer springs was always better to the point of the suspension losing too much compliance to keep the tires in contact with the road. All of this depends on the road surface of course. I guess this is more evidence the F30 is moving away from an enthusiasts car and more towards a luxury one.
In short, that K&C machine is one awesome piece of equipment.Eppur si muove.
10-03-2013, 03:42 PM #5
2011 E90 M3 \ Melbourne Rot Metallic
10-03-2013, 11:07 PM #6Member
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