Can I fit winter tyres to my Porsche 911?

I own a 2003 Porsche 911 C2, with 18 inch wheels. I want to run the car in the winter and fit winter rims and tyres. Can I reduce the diameter and width of the rim for winter tyres?

Asked on 10 October 2013 by jcgough

Answered by Honest John
Not on this model. Smaller rims won't fit around the brakes. I've driven a 911 991 Carrera S on 20" Alpin P4s in Latvia and it was remarkable. But low profile 18 inch cold weather tyres will be expensive.
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