I had Potenza 205/60/15's on the front of my Volvo wagon ... in grooved or uneven road conditions the car moved around laterally. All suspension bushings check out OK. I swapped the Potenzas to the back and brought the Toyos to front and it definitely helped the lateral movement problem. The Potenzas were kept at equal pressure, no excessive wear patterns etc. Questions: 1. Opinions of the RE930? 2. Looking at Costco for next set: either Michelin or BF Goodrich. Suggestions? I'll be going back to a 195/60/15. Mostly concerned with quietness and handling.