OK - is it just me? Tried a set of PR3s on my GSA and loved the back one. Grippy, comfy, everything.
And hated the front! It was like riding on a solid rubber tyre. So stiff that every road imperfection came straight through - bl**dy uncomfortable. Tyre pressures made no difference. In the end, changed back to basic Tourance and back came the comfy front end. Anyone else had this problem?