Join Date: Dec 2003
Location: Rocket City, AL
Sure there isn't something wrong with your wheels or truck?
I got some KR21s for my Town Car 215/70-15 last December and they are smooth as silk. Actually pretty good grip for a Touring tire. But this is a Town Car, I wouldn't put them on my Bird. But I go through 3 sets on my Bird for 1 set on the Town Car.
As far a ride quality, I don't think you will notice much difference between 75s and 70's.
1995 PI Tbird
2001 Lincoln Town Car Cartier L
1998 TA Vert
2004 Buick Regal GS
2000 Honda ST1100
1990 Mazda RX-7 2+2