I'm looking to replace rim for one of the wheels of my car (Nissan Altima 06). The wheel specs - 245/45 R18. (Different from the ones that come with the original car)
The rim looks like this -
I found similar rims online on ebay, which looked exactly like the one I have; but then I stumbled upon this tire size calculator. After playing around with this calculator, now, I'm not sure how important is the rim width, and what width would be appropriate in my case. I'd appreciate any help in this regard.