to be more helpful its a race shopinsomniac said:you wont need the inserts. i work for a tire shop most rims are lug centered meaning when the lugs are tightened it puts the wheel dead center. now some after market rims are hub centric meaning you would need the insert to keep the rim dead center on the hub.
Fine point; if the bore is 2mm larger, then you couldn't use a 2mm thick ring anyways; you'd need a 1mm thick ring........... so tho you're not planning it anyways, I just wanted to point that out in case ya'll get into something else like that that requires a precise fit; the math will get us, ha.thanks for the extra input,
I can't find 2mm rings anyway, most are much thicker for aftermarket rims.