I ordered 2x 225 45 17 eagle f1 gsd3's from camskill (bargain 130 delivered) and took them to ATS to get them fitted and the tracking done. they had to move my rear NCT5s (4.4mm remaining) to the fronts and put the new F1s on the rear. they couldn't put them up front to replace my worn NCTs due to some regulation that states that front tyres must not be wider than rears - didn't know about that one.
anyway, drove down to kent today and to be honest the car feels awful now! really 'floaty' at the front. checked the pressures and they were all over the shop (nice one ATS) so once sorted it felt a little better but still not brilliant. i'd say the car felt more stable with my old NCT5s all round - even the dodgy ones up front with 1.6mm on each tyre.
now... i'm thinking that the F1s at the rear are doing their job better than the NCT5 at the front and somehow upsetting the balance as the NCT5s want to wander. before all NCT5s wandered but now only the front are. does this make sense to anyone or am i on drugs?
i also caught the new fronts (old rear NCTs) slipping a couple of times. i'm putting this down to my theory that they've spent a while at the rear and basically trail along behind the car and don't really experience any real stress from corning or hard excelleration like the fronts do. therefore my theory is that they need a couple of weeks of hard driving to get scrubbed in and provide some real traction.
yes i've had a couple of beers but basically, i'm thinking that i should be replacing the NCTs up front as well otherwise the F1s at the rear aren't actually helping things.