Yeah - though tbf the original post didn't mention snow and I expect it would be hard to set up a trial for this in most of the UK.147daytona wrote: ↑Thu Nov 28, 2019 4:13 pmNothing there about driving in snow but luckily, as you know Kevin, we don't get much snow in Suffolk so don't have to worry too much about the pros and cons of different wheel sizes but even so, a 225/17 is the same width as a 225/19 so would have the same footprint in the snow.
Reducing the width of a tyre would make more of a difference than reducing the diameter.
I suspect on snow it's mainly about an open tread pattern that would allow compacted snow to drop out. I imagine snow tyres are pretty noisy at other times.
On my last car - an Astra GTC - I had 19" wheels and all-weather tyres (Goodyear Vector 4 Seasons Gen 2). These were a huge improvement on wet country roads compared to the factory fit tyres.