tire size

I just got a set of 2" drop spindles for my 92 mm and a set of 17 escalade wheels. Id like to know what size tire I need to run. I was thinking 245/40/17. Any opinions?

205/40 and 215/45 and are pretty common sizes. I used to run 215/45 with my 17s, believe that size is the closest to original tire size also.