Polycarbonate or PC is a better material to use for the V-wheels. Ones like these: SIMAX3D[13pcs/Pack] 3D Printer Wheel,Clear POM Polycarbonate Roller 626zz, wear-Resistant/Silent/Burr-Free for Creality CR10, Ender 3, Anet A8, Artillery X1 Upgrade Accessories: Amazon.com: Industrial & Scientific

But the better solution for a commonly used printer and especially for the bed is to convert to linear rails and guides. These will perform a lot better and last a whole lot longer than any V wheel you will find. And they bolt directly to the aluminum extrusion so all you will need is to make pieces to bolt the cars to your bed. You can get good quality rails and cars here: Motion Constrained | Hiwin Linear Motion Guide Rail and Block Store

The HIWIN stuff is true CNC grade stuff and it will blow your mind at how utterly smooth the action is with light preload. The same is sadly not true with any other brand. I made a short video displaying this and how awesome they are right here: Genuine HIWIN linear guides - YouTube