Well, I had the Goodyears fitted to the front only on Friday. Handling has improved dramatically, although I wouldn't say the tramlining has completely gone. 90% gone, maybe. I wouldn't be surprised, though, if fitting the Goodyears on the rear too completely (as far as the UK roads will allow!) clears it. Interestingly, I aksed my mechanic to check for any rub on installation. He said (and I concur) that there is none. He even measured the Goodyars & found them to be exactly the same size as the Pirellis.
So far, so good!
Tinpusher.