I have 06 sedan and have 20x8.5+35 front and 20x10+40 rear. What size tires are good ? and what size spacers will i need for flush aggressive look..i know i should get new rims with correct offset for better fitment but for now i have to stick with these until next year..please give me feedback thank you

 

235x35x20 front and 275x30x20 rear. That would give you the same overall diameter front and rear. Michelin, Nitto, and Pirelli all make tires in that size. Maybe add a 15m spacer up front, roll the rear fender and call it a day.
Or you could do 245/35/20 front and 285/30/20 rear....
Or 255/30/20 rear and 225/35/20 front, but you would need about a 15mm spacer in the rear and 20-25mm up front. You would also need to roll your rear fenders, pinch the front and add some Neg camber.
Just a few options.

 

He currently has 245/35/20 in the front with 20mm spacers. I forget what size tires he has in the rear but he's got no spacers in the back, his rear fenders are already rolled. He wants more of a stretched/poked setup so we were talking about putting the 245/35/20 and the 20mm spacers in the back. And get 225/35/20 and 30mm spacers for the front

 

Sounds like you got him covered with the 225/35 and 245/35 + spacers
Original post was very vague so I threw out a few options.

 

Yea i guess im going with 225/35 front with maybe 25-30 mm spacer and 245/35 rear with 20mm spacer and some neg. Camber..thanks

Any other suggestions ppl?