Best tyre size for a comfortable Zafira?

I'm considering buying a new Vauxhall Zafira Tourer, 1.4 turbo, petrol, auto, Elite. Fitted as standard (I understand) are 235/45R x 18 tyres. My sole concern is a comfortable ride. With this in mind is there a better sized tyre that I could have fitted?

Asked on 20 September 2012 by Philip Hughes

Answered by Honest John
Vauxhall seems to be unwilling to fit smaller wheels and deeper profile tyres to its cars. But I commented favourably on the ride on 19" 40 profile tyres here: www.honestjohn.co.uk/road-tests/vauxhall/vauxhall-.../ I think your problem is more likely to be tyre damage and the cost of replacement than actual discomfort.
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