mid (ish) range price, decent performance. Don't discount not having staggered sizes either, 225/40 all round is a cheap option to consider and seemed fine on my 130i. 4 Vreds = £400.
Current: E90 335i
Previous: E87 130i, F10 550i, E61 550i, E90 335i, E87 130i, E87 118d, Z4M, Z4 3.0i SMG, E46 330D, Z3M, Z3 3.0i, Z3 3.0i (US)