Quote:
Originally Posted by Jimbeau11
I would say new(er) tires on the front and old (end of life) tires on the rear magnifies the under-steer issue. Many tires lose their ability to provide maximum grip long before the tread passes the wear bars and if you have good grip with newer tires on the front and low grip with older tires on the rear you're definitely going to notice a "loose" condition.
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This right here, except I think you meant to say over-steer.
The 1LEs are engineered with a slight bias toward under-steer which makes them very easy to control right up to the limit. I would say your over-steer issues on that day is 100% attributable to the tires, new fronts=more grip, old rears=less grip, more front grip than rear grip=over-steer, case closed. I would say it's time for some new rears and you will go right back to enjoying your car on track with full confidence!