for sport rim always will be cheaper in Klang area > Rawang area > Shah Alam area.
but if you staying at KL area and looking for sport rim. i would recommend one shop at Taman Muda there, opposite Maxis service center (We Automobile).
Because previously i was searching to change rim as well so i doing quite some research on nearby area.
Trade in 15" old rim to new sport rim 15" only add RM340. they also few Lenso Thailand made rim, i just need to top up RM740 for it.

*heard people say over the internet this is the KL branch, they got shop at klang as well. so their price is same as klang price.
https://www.facebook.com/pages/We-Automobile/117130535017497