Car swap comparison- Tengocity and GTSussex

Lorcan · 07-24-2015, 02:52 AM

Thanks for the feedback Ian

Watsey · 07-24-2015, 02:56 AM

Quote:

Originally Posted by gtsussex

Great news Ian - glad you're a happy chappie!!

Cheers Guy. Money well spent.

HighlandPete · 07-24-2015, 03:03 AM

Quote:

Originally Posted by Watsey

......Interestingly, the front end now feels quite twitchy - more so than Terry's 335xD with the same setup. There's some tram lining and 'hunting' on uneven tarmac, the stiffness of the ARBs cause some passive steering input if the surface of the road has sharp undulations from side to side, and the rear of the car is more mobile (willingness to oversteer). I've become so used to having to wrestle the car through fast corners, due to the understeer, that I'm having to recalibrate my steering inputs : less steering angle, more delicate, lighter grip, and more adjustment through the corners. ......

Have you checked the tyre pressures? Could be that simple a solution.

HighlandPete

Watsey · 07-24-2015, 03:11 AM

Quote:

Originally Posted by Watsey

Quote:

Originally Posted by Tengocity

Good stuff Ian! Curious about your front end twitchiness... You don't have VSS?

When I changed the tyres I immediately noticed a much better aggressiveness when turning off centre... Is that what you mean?

Hi Terry. No VSS. I think it's a combination of much better bite from the MPSSs and less roll with the ARBs. Steering inputs are now immediate/sharp rather than dulled by weight/understeer, especially off centre, hence the need for me to recalibrate my driving style.

The other factor is that mine's an sD - less weight in the front end may add to the immediacy of the steering.

Regardless, it's not going to affect my enjoyment if the car now.

Watsey · 07-24-2015, 03:13 AM

Quote:

Originally Posted by HighlandPete

Quote:

Originally Posted by Watsey

......Interestingly, the front end now feels quite twitchy - more so than Terry's 335xD with the same setup. There's some tram lining and 'hunting' on uneven tarmac, the stiffness of the ARBs cause some passive steering input if the surface of the road has sharp undulations from side to side, and the rear of the car is more mobile (willingness to oversteer). I've become so used to having to wrestle the car through fast corners, due to the understeer, that I'm having to recalibrate my steering inputs : less steering angle, more delicate, lighter grip, and more adjustment through the corners. ......

Have you checked the tyre pressures? Could be that simple a solution.

HighlandPete

Good point

jumperjohn · 07-24-2015, 12:45 PM

The work you had done sounds really positive. I knew it would be but the ARBs sound like a huge improvement.

I wonder how much the torsional rigidity is increased by? A brace must help, like the M3 version.

I found this earlier, the M3 has around 25% more torsional rigidity!

http://blogs.youwheel.com/2014/04/25...ehensive-list/

A knowledgeable chap explains the difference between an M3(4) and a 'lowly' F30 and why the M is stiffer, and other such things.

It seems that with the amount of stiffening going into the M cars the F series must be 'floppy'.

07-24-2015, 02:52 AM	#67
Lorcan The artist formerly known as AC Schnitzer UK 3610 Rep 4,518 Posts Drives: The Yellow Peril Join Date: Apr 2013 Location: Norfolk UK iTrader: (0)	Thanks for the feedback Ian
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07-24-2015, 12:45 PM	#72
jumperjohn First Lieutenant 114 Rep 383 Posts Drives: BMW M340i X-Drive Join Date: Sep 2014 Location: Oxfordshire iTrader: (0)	The work you had done sounds really positive. I knew it would be but the ARBs sound like a huge improvement. I wonder how much the torsional rigidity is increased by? A brace must help, like the M3 version. I found this earlier, the M3 has around 25% more torsional rigidity! http://blogs.youwheel.com/2014/04/25...ehensive-list/ A knowledgeable chap explains the difference between an M3(4) and a 'lowly' F30 and why the M is stiffer, and other such things. It seems that with the amount of stiffening going into the M cars the F series must be 'floppy'. Last edited by jumperjohn; 07-24-2015 at 12:58 PM..
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