Those tires are too wide to fit properly on the stock CB550 1.85 in. rims.
You can expect rapid center of tread tire wear. And, you will have to run higher tire pressures as the rims won't give the sidewall support the tire was designed to have. The higher tire pressure compensates for that.
They will be nice when new, but the handling will get increasingly worse as they wear. Expect to begin fighting the bars in turns after a thousand miles. The bike won't have neutral balance in turns, anymore. You will also have quite noticeable "chicken strips" as the tire nears end of life.