How do I know what brake rotors to get for my bike? In the next month or so I plan on getting the 2019 Trek Crockett 5 as a cyclocross/road bike. I will also be getting some nicer road wheels for the bike so I can swap out the wheels whenever needed. Of course I plan on getting the same cassette for the rear wheel, but I was wondering about the brake rotors. On Trek's site it says the brakeset is "TRP Spyre mechanical disc" and in the close up of the brake rotors it says "160-35" on the rotor. I'm assuming this means they are 160mm rotors, but I don't know if I need to get the exact same discs that come with the bike or if I can just get any 160mm rotors.

Here's the link to the bike for more info: https://www.trekbikes.com/us/en_US/bikes/road-bikes/cyclocross-bikes/crockett/crockett-5-disc/p/23092/?colorCode=black

Thanks!
TR160-35 is the model number. They are 160mm Centerlock rotors. If your new wheels have Centerlock hubs, then you need either centerlock rotors or adaptors. If the wheels are 6-bolt, then you need 6-bolt rotors. Either way you'll want 160mm rotors and to keep it easy, I'd stick with Tektro rotors for this system.