Daughter has a P reg Vauxhall Corsa with manual steering. The steering is unbelievably stiff at low (crawling) speed, I tried slightly over-inflating the front tyres but still the same. At a faster speed the steering is fine therfore I don't think there is a problem with the steering rack etc.. One of the front tyres look ready for renewal, the other has a fair amount or tread left, they are both different makes but look "Budget Brand" as I have never heard of the names. Would new tyres make a difference? any suggestions on a brand that could help? A local tyre company has suggested a brand called "Stunner" they claim these are made by Pirelli at 30 quid each fitted, is this good? Oh, tyres are 165 70 R13 Thanks in advance