The average driver will panic when either end of the cars steps out.
We are assuming older tyres = less tread depth, hardened rubber due to age ?
If the front looses grip (due to older tryes), during the panic attack, the driver lifts off the throttle. This causes weight transfer from back to the front, thereby increasing front grip, hence returning control to the driver (hopefully).
The same driver will react the same way when the rear looses grip and will therefore end up in the hedge (best case scenario) or go into oncoming traffic (worst case scenario) as the car will spin.
I have the original Pirreli tyres on the rear with a good 3-4mm and newer bridgestones on the front, with 1mm to the wear line. Car has done 11 K miles, the last 4k on the bridgestones.
So why recently did the back end step out when the rear tyres have more tread.. ? I entered the bend at a constant speed ready to accellerate out of the corner once reached the apex. My braking had been done on the straight prior to the bend.
The lack on tread on the front can be felt on some corners, hence caution is required as i eek the last few miles from the bridgestones So you would expect the front to loose grip not the rear ?
Personally I have always replaced the fronts, as for me, these wear faster than the rears. Otherwise i would be changing tyres more than i do already.
The rears have scrubbed in and reflect the setup of the rear geometry, have maximium tyre to road contact/even wear. if moved to the front it is highly likely that I will have reduced contact patch/different wear pattern until the tryes re-scrub. New ones on the rear also means they have to scrub in also.
Putting new ones on the front means only one set to scrub in and they will do so quickly and evenly to the set up of the geometry.
And tho the Bridgestaones have been good for grip, 4K miles is not enough. Looking for alternatives.