Bought a new set of rims from Japan and fitted today at local Tyres store and they said need to put the spacer in and so what size should i get and where(ebay)
(OEM tyre and rim size - 225/40/18 18X7.5 ET55) and (New tyre and rim size - 235/40/18 18X8 ET45)

Thanks in addvance!!!!