fk452 tire stretch, sizing question?

i have some 235/40s on 18x10, but the profile is too big, so i was going to switch to 245/35, but from looking at gatos post it dosent seem like it will stretch much at all, anybody have any ideas for my problem? since they dont make like 235/35 18.

Im not sure about those tires, but i just ordered 225/40's for my 18/10's.  Il get up pics once they are on, im running Azenis and they also dont come in the 235/35 i was looking for.  Im worried its gonna be too much sidewall but its the best size they had.

I would run 225/40/18. Thats what I'm running on my nsx with JP scaras. The strech is perfect for fender clearance.

any pic?

225/40 Kumho Ecsta on 18x10:
[IMG]http://img.photobucket.com/albums/v257/dbloemhard/Cedric/DSC00034.jpg[/IMG]

Also foreground in this pic:
[IMG]http://img.photobucket.com/albums/v257/dbloemhard/Cedric/CIMG2645.jpg[/IMG]

225/40 seems to fit well, i got mine on yesterday, the sidewalls are really stiff so i had to use a rachet strap around the middle of the tire and hit it with 150 PSI to seat the bead.
[IMG]http://img247.imageshack.us/img247/6950/dsc00948le6.jpg[/IMG]
[IMG]http://img76.imageshack.us/img76/3879/dsc00949ln4.jpg[/IMG]
[IMG]http://img72.imageshack.us/img72/4264/dsc00951zr0.jpg[/IMG]
[IMG]http://img236.imageshack.us/img236/5358/dsc00952zz9.jpg[/IMG]