Wheels must definitely be removed. Calipers, propably not. I was able to get mine done without taking the calipers off but, as always, your mileage may vary. I had trouble getting the new shafts to seat, which I had never seen anyone else post before. The story is here.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References