new tyres,,,

well here i am again back for another night, god i love my job..lol.
and the pay is great too...
I;m looking at replacing my tyres in the not so distant future, just wondering which are best value for money, as well as safe, and can live up to the job, don;t do any off roading,, and only race in a straight line ,lol. ...currently run 19" 255/50s with springs and shocks, very firm ride,i was looking at maybe 255/55/19s only to improve ride quality, what do you think, dose anyone run on 255/55/19s, feed back would be good
Thanks Rob

mine are 255/55/19, I went from 255/55/18 to the 19s so can't really compare, the ride is not firm I wouldn't say so anyway! the only problem with them is when she's sat down on the bump stops she's actually sat on the tyres