The difference in ride is greatly improved with the new tire combo. Those GY tires suck for daily driving-- there is a reason most major departments have dumped them in favor of the Firestone Firehawks. I don't plan on getting in any pursuits in the family SUV, so I don't need pursuit rates tires. It still corners and brakes just fine.
I have 43,000 miles of daily driving on the GY's (2nd set already) and the ride quality is comparable with any large high performance sedan.
The pursuit rating of the tires carries across all performance envelopes.
The GY tires simply brake, corner and handle better than none high speed rated tires. They also eat up high speed long distance cross country cruising very well.
I have to question the wisdom of downgrading the handling capability of a vehicle that has high performance built in.
Then again I see it in the Corvette community all the time. "Hey, my 450hp 3000lb sports car has a harsh ride - I wanna save $200 per tire and buy some high mileage doughnuts on 22's"
As for major departments switching from the GY RS-As, they switch to the Firehawk GT Pursuit speed rated tires, so they are not really giving up the speed rating.
Did you swap to the Firehawk GT Pursuit in 265 60 17 108V?