I recently bought a 2007 Focus 1.8-litre petrol and am experiencing some road noise from the rear tyres. This has been diagnosed as wear on the arrow pattern tread of the tyres creating bobbles by 2n4 of Dawlish, a very reliable garage. The tyres are Goodrich G-Force 205/55 16 91W. The front tyres are Kinforest KF550 205/55R16 94VXL, a make I haven't heard of before but from research of the internet they do not seem to be recommended. What tyres would you suggest for the Focus?