Ugh. How many part number rotors can Shimano come up with to confuse the crap out of me? :madman: I need to buy a 160 mm rotor that can be used with Deore hydraulic brakes (BR-M535). The original wheel had a Deore hub and an SM-RT62 centerlock rotor. The new rotor has to go on a Bontrager hub (with 6-bolt mounting). Jenson sells the SM-RT75 that is 6-bolt and supposedly for all Shimano disc brake systems - is this the right one? Are there other choices?