Easy (?) OD Auto Install

I bought Hankook 265/50/15’s and they’re a bit short, but I also wanted to lower the car 1” so it should work out.
MOst good tire people publish the tire height @ recommended pressures for a specific rim width . A 28.5-"29" tall tire is good for highway but in traffic sucks unless you have a low first gear . It's all about revolutions per mile .