HELP!! I need tires and maybe rims!

[BMW95318TI]

So, I went to get my tires balanced and rotated yesterday for the first time I have had my ti since last month. Well apparently the guy before me decided to never rotate and balance the tires.

Long story short the tires have been cupping and sounding horrible on the road. Sounds like I'm taxing to take off.

I was curious if anybody had some decent tires and maybe rims laying around that they wouldn't mind parting with for a good price? I would like to go bigger than the stock 15' rims but my first concern is a set of 4 tires.

Help out guys!! I live in KS. Any thoughts or ideas for a novice ti guy??

Thanks in advance.


Oh, what is the biggest size tire that can fit on 15' rims without having issues? Thanks