IPD subframe bushing kit improved handling
2002 V70 XC with 199K miles, originally 158K miles when purchased in Dec. 2013
Background:
About 3 months after I bought the car with like new tires, it developed a bit of wandering in the steering. Nothing noticeable in terms of tire wear. The wandering wasn't bad, it was just noticeable to me because it wasn't exactly like it was when I bought the car, and it was rock steady when I bought it. I had the suspension gone through about 2 months later and it did need a driver's side lower control arm followed by an alignment, which the replacement of the LCA made no difference in terms of this bit of wandering in the steering. Still the tires looked perfectly normal with light, even wear. FWIW, I drive about 35K miles per year.
Finally about 3 weeks ago I had the IPD poly subframe bushing insert kit installed, and by itself it has made a noticeable difference in how my car tracks. Actually it tracks great and without any wandering, just like it was when I bought it. I understand from reading many posts here over time that there are so many things that can contribute to poor or unpredictable handling. The main reason I wanted to try this kit was to eliminate any play that might come from the subframe bushings, since I can't afford to invest a lot of money on all new suspension parts just to try to make the steering a little better.
I just wanted to give my two cents and to say that for me this kit did make a noticeable difference. I realize it's sort of a band aid in one sense and perhaps my subframe bushings should be replaced at some point, although they didn't look bad when the inserts were installed. For me, this was a cheaper alternative which in my case it didn't affect the alignment when it was done and it did affect the handling in a positive way.
I'm not affiliated with IPD in any way, don't know anyone that is associated with the company. Just sharing my experience with this particular kit.