Originally Posted by
Tunnelrat81
I have a BB86 Trek being used with a Shimano crankset, and although I have yet to have any trouble with the OEM BB (the bike has less than 1k miles), I've had my eye on the threaded option such as the Wheels Manufacturing bottom brackets. I've had good luck with their threaded PF30 BB's for shimano cranks, and I assume the threaded BB86 option would be equally as successful. They are more expensive, but if it decreases noise and and increases bearing life, it might be worth considering.
Wheels Manufacturing BB86/92 Bottom Brackets
-Jeremy
While there are definitely situations where pressfit-to-threaded bb adapters are not a bad idea, if you are running a Shimano crankset in a frame that uses the BB86 standard, there's no good reason to not use a Shimano BB86 bottom bracket, in my experience. These Shimano pressfit bb's are very durable, sealed well, and are made for Hollowtech II cranks, no adapters called for or needed. I've personally had excellent results with their performance and durability.