Quote:
Originally Posted by NutGud
Hi Zdan,
The tyres are brand new. Date stamp 1120.
|
It would be great if you could swap on a different set of tires just to see if that changes handling behavior.
The problem was noticed after the new tires were installed, it stands to reason that they could be at least partly responsible for the handling issues.
One thing to consider is that brand new tires with full tread depth will squirm around a lot more than worn tires with little tread depth. But you'd think a "max performance" tire like the Michelin Pilot Sport 4 would have pretty good treadblock stability even new. My brand new Contis feel awesome, no issues whatsoever from go.
Quote:
My coilovers MCA: 6kg front and 4.5kg rear
BC Racing is 6kg front 7kg rear
Silvers are 6kg front 7kg rear.
But do note: MCA are the official sponsor for the Australia 86 series.
They certainly know a thing or two about 86s, their motion ratios and both street and race capabilities.
...
As church said, there's a bit more then just the spring rates.
|
For sure it can be made to work, might even be better for ultimate track work with track tires if limited to using the stock torsen diff, to limit unloading of the inside rear. It's not where I'd start for a good street-tire setup though...
If understeer is a specific problem, then having front wheel rates more than twice as stiff as rears is something to perhaps reconsider...
Anyway based on your TC being activated a lot, and improved handling balance with TC off but with lower-than-usual grip, IMO it's worth investigating tires.
Again, it'd be great if you could swap on a set from another FT86 known to handle "normally" and see what your car does on them.