what am I talking about? please keep in mind that my response is to you, uncle scotty and anyone else reading this. Not just to you. "why not?" was the only part directed just towards you.
As you know there are many similar sizes for instance 225/50/17 It's approximately .1" narrower and .2" taller than the 245/45 you suggest. Pretty close. Just showing there may be other options.
And looking for any others