Tyre and rim help required

[hainzy]

i have found the best combos to be:

14x6 = 215/65
14x7 = 225 /65
14x8 = 235 / 60 and 245 / 60 works well too..
15x10 = 295 / 60

I currently have 14x6 with 215/65 on the front and 14x8 = 235/60 on the back. But isnt it strange to have different profiles form front to back? Ie. 65 vs 60..? Or is that pretty normal?

Cheers.