@Ex850R and
@Philia_Bear, thank you so much for your replies - loving this forum!! Sure I'll be on it regularly once I lock down an XC90 :)
So, I've just put down a deposit on the MY12 XC90 D5. Will test drive it on Tuesday to make sure the combination of D5 and 20" tires feels OK to us. We have just returned from Canada, and owned a 2008 V8 with 19" rims there, so assuming it will feel somewhat different to drive. Excited!!
Appreciate the advice to have the same tires all round - will definitely factor two new tires into the equation.
Final question (sorry!) - it has full Volvo service history, though was last serviced in October 2017. Will also be supplied with ACT roadworthy. I was thinking that it would be OK without independent inspection, just taking it for a personal test drive, but would appreciate everyone's thoughts.
@timbo , the dealer said that they prefer mobile inspectors only, not taken off-site, so there goes my plans to bring it to you, sorry (it is from Lennocks Honda, which I believe is nearby you?).
Thanks again all.