First of all this is my first time really getting into the buying of rims and all that so if I'm asking a dumb question...oh well. Heres my issue. I'm thinking bout buying 20" Zenetti Heir rims. I'm given the option to buy them in either 20x8.5 or 20x10. I know the 20 is the size of the rim and the 2nd number is the width but I'm wondering if there is really a difference visually if I get 8.5 or 10. I mean, I'm thinking if its 20"s its 20"s. If anybody can explain this to me or post some pics to give me an idea please do.