Ok so i recently purchased the penta's in 20x9 +25 and 20x10 +25.....i am currently lowered on 350z s-techs with the rear spring mount mod but i will be getting coilovers in like 2 months. i will be slammed when coilovers are on the car. i was thinking 225/35 front and 235/35 rear for both now and when i install coilovers....Oh and i will be installing spacers just haven't decided what size spacer. KNOWLEDGEABLE and HELPFUL input appreciated!

*Front and rear fenders rolled flat with slight pull in rear*

 

20s dont have enough sidewall to stretch. Wont look right.
just makes a very small difference is what im saying.. most zs w stretch run 18 or 19, far more tire get an angle out of it..

btw there are musltiple threads on all fo the above already.
stretched tires thread, spacers thread etc.

 

on that narrow of a rim, you will probably wanna run 185/205 for your tire sizes to get that balla hellaflush look.

 

225/35 front and 245/35 rear with spacers will work pretty well. Those wheels will not give you the super HellaGay stretch if you wanting that limp wristed look but .... what you have will give you some stretch , spacers will give you some poke