Quote:
Originally Posted by Calum
I'm not an experienced track driver. I'm an average guy that likes to find fun turns on my way to work and take them at speeds that make my wife pee a little. That said, I agree that the stock set up is good. What got me in was mid corner, with a steady steering line, small bumps would upset the chassis enough that it made me nervous. It never got really out of shape, but I found myself holding back to avoid the chance that it would, long before the stock tires let go. Maybe it never would have happened. Maybe a better driver never would have cared and would have driven the car right past that point. I'm not that guy. I know racers hate this, but I'm modding my car to suit my abilities instead of modding my abilities to suit my car/class.
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IMO this behavior has a lot to do with the stock tires.
They seem to be designed to lose grip when the car's attitude is abruptly altered laterally, but still have a pretty fair amount of grip when the car's attitude is instead gradually turned. A jolt (like a high speed mid-corner bump) will make the car feel unsettled, even though it still has plenty of grip left. This makes it easy to coax the car into oversteer with a flick of the steering wheel or abrupt throttle change (e.g. a Chris Harris-like drift), but still provide plenty of grip when the driver's inputs are slower. This behavior is bared out in the stock car's skidpad numbers which are remarkably high given the narrowness and compound of the OEM Primacys.
The stock car on more aggressive aftermarket tires of the same size loses this wiggly tendency. It feels more planted and less prone to oversteer without any suspension changes at all, even if the absolute skidpad numbers are barely changed.