Tire Size, Max. tire size for 7x17 / 1.6" drop? Options

[3TST]

I want to know what's the largest tire size that I can go to, without rubbing or bottoming, under the following conditions:
- 7x17 Rims;
- 1.6" drop front and rear.

I previously run Hankook Ventus 205x40x17's (dia. 596mm/23.46").
(Original tire size was 195x65x14 (dia. 609mm/23.98")).
I'm more interested in increasing the profile.
I'm looking at:
- 205x45x17 (dia. +6mm/0.28")
- 215x45x17 (dia. +16mm/0.64")
- 225x45x17 (dia. +25mm/0.99").

So, ultimately the question is:
Can I go to 225 on a 7" rim with a 45 profile w/o rubbing?

[3TST]

Thanks for the link claudio.
Yes you're absolutley right about the speedo reading.
But I reckon that if I can keep within a +/- 10% speedo reading I'll be OK.

I believe that increasing the overall tire size will mean I loose some acceleration but I'm not too worried about that as with the other mods I'm doing they will compensate for that.

What I am actually trying to do is close the gap between the tire and the wheel arch.
I am proposing to do this by lowering the susepnsion and increasing the tire size.
I have bought a set of new KYB GR-2's and some B+G lowering springs (1.6" drop all round).
I also have a set of TSW R Evo 7x17 rims.
So it just a case of figuring out what the max. tire size is that I can go for with a 1.6" drop.

Infact I have my answer in another thread '18" rims'.

I reckon I'll go for 225x45x17.
This will give me an overall drop of 2.6" all round.