Tyre stretch for 9 and 10J wheels?

[allen hunson]

I have staggered rims and messed up the first time because i went with 215 45 17 and 225 45 17 which makes the profile thicker on the rears. I want more stretch and want to make the front and rear wheel look even. I have made a list below that pair with each other. Which do you recommend? (these are going on a AC type 1 if you were wondering)

lots of stretch
195 45 17 9J
205 40 17 10J

medium
205 45 17 9J
215 40 17 10J

light stretch
215 45 17 9J
235 40 17 10J

closest?
195 45 17 9J
215 40 17 10J

 

[anzhar]

When I had stretched tyres on my 18x10.5 and 18x9.5, went with 225/40/18 rear and 205/40/18

But now that I'm running more power and the stories to about people getting 3 points per stretched tyres, I now run 285/30r18 and 245/35r18