ty rod iv go kart im a mechanic but these lil cars stump me e help from makin them faster to what rims will work is much app.
Hey troublocc, welcome to DIY
You could increase performance by researching all the info you'll find along the right side of the page here at this link. Just click here for lots of info/speed parts:-->
http://www.affordablegokarts.com/
To help you find different rims that will fit, you would need to post info about your old rims, like they're width/diameter and mounting bolt-hole spacing. If you also want to use different/better tires, include a link or info about those.
This forum section is mostly just for you to introduce yourself. Instead of asking for more advice here on this thread, you should start a brand new thread in our "Go Kart Discussion" forum section here:
http://www.diygokarts.com/vb/forumdisplay.php?f=6
Try to post pictures of your kart on your new thread too, so everyone can easily see what type of kart it is without having to look up your model#. (like I did)