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BMW downsizing tyre rim size

Living in rural N Yorkshire, on your recommendation I fitted a full set of Michelin Alpins on my BMW 330i which I leave on all year round. They have proved to be exceptionally good in all circumstances, but I now need to change to a newer F30 Touring model. The two year old 328i I am looking at come with 19-inch rims in M Sport guise, so could I fit 18-inch rims and my existing Alpins which still have lots of tread, but are not run flats?

Asked on 31 July 2015 by North Yorkshire wanderer

Answered by Honest John
When we tested the 328i in February 2012 it came on 225/45 R18 tyres and they were okay. See the video here: www.honestjohn.co.uk/road-tests/bmw/bmw-3-series-f.../ So you must be able to fit your 18-inch wheels with the Alpins, though I wouldn't want them on the car through the summer. If you want on set of tyres for summer and winter you need the new Michelin Cross Climate tyres.
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