What size tyres for 06 plate astra sri alloys??

[TUCKER T]

Hello team just bought a set of the 5 spoke sri alloys for my father in-laws 06 plate astra, being from another flagship im not sure, so could anyone inform me of the correct tyre size?


Im guessing 225/35/18 or 225/40/18 maybe??


Any help well apreciated

[parapaul]

If you haven't already got them, the Pentas are 18" and 225/40 is the best choice.