went to get rear tyres balanced today, guy says there,s no point because the tyre itself was all bumpy/ridged and this was causing my complaint ie noise and slight vibration at 85 -90 mph. the tyres have about two months driving left on them, to be honest i couldn,t see much wrong with them and thought he simply wanted me to splash out on 4 new tyres. What can you recoommend in a middle of the road tyre , previous continentals wore in 9500 miles so wouldn,t go there again .I am currently on vredsteins which have worn really well but have this balance /ridge issue. Please advise!__ tyre guy recomended goodyear f1 at£117 fitted each. (235x45x17).Is this good and how would they compare to pirelli p6?