I have a cr500 and a cr500af. The af came with two sets of wheels and I just bought some excels for it (dirt set-up). Now I have some extra wheels laying around that I would like to use. Of course I have two 21" and an 18" and a 19". The steel frome 500 is plated. My question is which one should I lace up for the front? The 18" or 19"? Would it be better to have the 19" on front kinda like a sportsman set-up (bigger up front)? Or have the 18" up front to put more weight up front? Also, tire choices for each scenario. I wanna make sure the front is not wider than the rear tire. I don't care if they are the same width.