Hey all, 30 years ago I had a spoke 16 rear stock front on my 73 750k. Till some drunk chic hit me, bent rim so I bought a 16 in.comstar, back then I took like a strong 1/8th inch off the brake drum ran great and yes no brake issues did the same to sisters 74. Then I bought another comstar off ebay cheap I run a 130 90 16 tire lowwers bike a good bit and yes more rubber on the pavement. and it came with the stock hub, so no need to grind off the hub lip. I also run a 19 inch comstar on the front. total bolt up no mods needed. They were stock for the 81 750 custom