So I pulled the trigger on a lease, basically loaded, but with 19" cyclones instead of 21s. Is this completely stupid? Does performance off the line take enough of a hit to negate the benefits of ludicrous? I've heard mixed things. I'm mostly interested in 19 because of ride comfort and sound and tire longevity and rim damage... But I don't want to stupidly shoot myself in the foot here. Design locks tomorrow, anyone on 19s with ludicrous who can tell me not to worry? Or on 21s who can tell me they're not bad?