Tight as you can stand 'em on a normal bike,I used them for 15 years ,got used to flick 'em loose when...
but I'd keep 'em a bit looser in traffi/inetersection areas,tighten them as soon as.... Keeping them tight on a fixie 's just plain dumb.In a veladrome it would be good (that's what he'll argue) No one ever got run over by a truck in a veladrome though out of not being able to stop fast enough in an emergency. Logic should prevail under the circumstances.