We have a 2012 GT
premium with the Brembo package. My wife ran over something that cut the tire and it wasnt able to be repaired so we replaced 2 tires with Continental ExtremeDWs (stock size). They're on the back right now and I just drove it for the first time since the tires were installed. We live in the mountains and heading down the hill today, power would get cut and it felt like various brakes were being applied as well. I wasnt doing any spirited driving at all and the car has never exhibited this behavior before. This happened on just about every corner and mostly at turn in. Also happened on the 10/15 freeway interchange when I was traveling behind other vehicles at typical highway speeds. No illumination on the dash indicating traction control had intervened.
Any ideas on where to even start looking? The tires werent remotely close to losing traction. Tires were installed at Discount and Ford had the car the same week because the windshield washer motor went out. Oil was changed at the same time. Car has 23k miles on it and has been problem free until now.