Just ordered a 2018 Tarmac Comp Disc, sure I could have spent more and got the thru axle version for 2019 but for my budget it hit the mark. Any ways my one question about the bike is the disc brakes. Are the discís 6 bolt or center lock? Not familiar with Disc brake bikes, my only experience was a Diverge with 6 bolt mounted. I had that bike a very short time and didnít really use it a lot.