I'm looking into getting 20x8.5 45 offset with 245/35/20 tires. Other offset sizes are 38 and 25.
Should I get 255/35/20?

I also ordered a 15mm spacer for the rear should I return it.

Also is that offset good. What offset would you recommend?

What load rating should I get?

I'm dropped w/ coilovers.

 

I would go 235/30-20.

 

what offset with a 245/35/20 tire?

 

i have a 45 offset with 245/35/20 and a drop and wheels just clear fenders by 1/2inch or less

 

245/35/20 is the biggest you can get without alot of rubbing. 255 is too wide from what I have heard from everyone with 20's.

 

not too sure about your setup. i had 20 x 8.5" +35 offset on my car. it came with 245/35/20 tires. My car is also on H-Techs. The fronts rubbed like a ***** so i had to swap it out for 225's up front. Rears rubbed on dips and bumps. so i just sold the set. But thena gain this was with +35 offset, 45 offset should work for you tho.

 

Sorry for the newbie question but what is an "offset"? Do I need it for 20"s only or for 19"s as well?