E90 m3 18 winter tyre sizes

[SBN]

Hi all, I have the 18inch 219 alloys on mine that have 265/40 rear tyres. The alloys are 18 and 9.5 wide and I want to get some winter tyres. Seen a set of winters for sale on a set of 219 alloys which will make it easier to swap each year but the rears are 255/40 instead of 265/40 is that ok, better or bad for winter etc?

[SBN]

I've heard the 235 sets look awkward at the rear?

[SBN]

Sold

[SBN]

Ok so still thinking... I have found a great set with what is the square set up above on 18's but as I have 18's already with 3-4mm on my summer tyres I'm thinking why not change to winters on the current set up (cheapest option) and get some 19's for the summer ?

Are the 19's much harsher than 18's even with the adaptive suspension?

Any recommendations to which 19 set up would be best for summer???

Should I just stick to the 18's all year round?

[SBN]

Will these fit on the 219 alloy sets, they are off a Porsche cayman and on eBay there are a few sets at good prices. The only difference to my current tyre set up is the fronts are 235 (winter) and 245 (summer)


2 x 265 40 R18 101V N2
2 x 235 40 R18 91V N2

Edited by SBN on Sunday 21st December 09:41