Well, tomorrow going to order new tires for summer...
My wheels (front nad rear):
- 20" x 9.0
- 5 x 114,3
- Offset 38 FIXED with 20mm SPACERS to 18mm... so offset 18mm now.
Stock suspension.

So, now i need advice about tires:

Nankang NS-2
245 / 35 / 20 FRONT
275 / 30 / 20 REAR

or

Kumho ECSTA SPT KU31
245 / 35 / 20 FRONT
255 / 35 / 20 REAR
mmm?!

 

Definitely the Kumho's over those nangays..

Since you have the same size wheels all around I would run something like 255/35 all around..

 

Mmm, so everything should be ok with 245 / 35 / 20 FRONT and 255 / 35 / 20 REAR? I just want some difference with front and rear tires...

 

Why? With the same size at least you could rotate. I mean, you already picked a ridiculous wheel size, might as well make part of it okay.