215/60/15 vs 215/65/15 does anybody have picutes

I used to run the exact front/rear sizes you are considering: 215/65 and 255/60 on 15x6/15x8 rims. Spent a lot of time calculating the sidewall height and section width (tread width really wasn’t a concern) of various tires so as to have as much as possible equal “bulge” front/rear and a good rake, but not excessive. What you are considering size size is about the ideal as far as matched goes. Check out some visualizers and try different tire combos to get a better idea of the stance you want.