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  • So the fork on my new touring bike is going to be with 15mm thru axle, we can change it to 12mm if absolutlely necessary as the fork is yet to be made.

    The SON dynamo hub I have my heart on only does either 15mm / 6-bolt or 12mm / center lock.

    I perfer the center lock system for the disc brakes but would dropping the fork compatibility to 12mm to make it compatible with the disc brake system a bit of a stupid move?

    What are the disadvantages for a 12mm thru axle for the front? If any?

  • the fork on my new touring bike is going to be with 15mm thru axle, we can change it to 12mm if absolutlely necessary as the fork is yet to be made

    If you're having a steel fork built, it wouldn't be too difficult to incorporate a bushing into the design which allows it to use 12mm or 15mm. If you go with 12mm, it doesn't matter that much as any 15mm×100mm hub can be sleeved down to fit a 12mm×100mm fork. I'd go with 6-bolt anyway, CentreLock seems like something designed for weight-weenies who don't mind paying more for stuff which will wear out quicker, which doesn't fit my definition of touring bike. In fact, if it's a custom steel fork I'd go 15×110 Boost for the stronger symmetrical lacing, particularly on the SON which starts out with fairly closely spaced flanges, 48mm asymmetric for the CenterLock but 56mm symmetric for the Boost.

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