I am planning on getting some new wheels for my 14 is250 and was wondering what the best size that looks good but doesn't take away too much from the already good handling. it is AWD as well if it makes a difference.

 

I think 19 is the max most people will go. Width and offset can be tricky, but you may get some ideas from the following thread: https://www.clublexus.com/forums/is-...exclusive.html

Just make sure your tire diameters front-to-back are the same or very close.

 

Don’t forget heavies wheels will also make the car slower. I changed my 16 inch to 18 inches on my old LS430 and almost cried the day I drove it away from the tire shop it was so much slower.