Tire thread again

I got a flat tire and now I need 2 new tires. I decided on getting Yokohama AVS ES100 but unsure of the size.

I cant find the tire in 255/45/17 so I decided to get them in 275/40/17

To my understanding, 275/40/17 can fit on the stock 17x8 rim, but it will bulge a little. Is that the only thing?

Thanks a lot!