Update
Wheels arrived Tuesday, got 20 bolts with them but no locking nuts. All indivudally wrapped and unwrapping revealed not Toyo Proxes T1-S but the newer Toyo Proxes T1-R (has extra shoulder tread for quieter motoring (so I was told).
Anyway jacked up the car and swapped them over, torque for these is 140N/m on steel wheel up to 170 N/m for the alloys.
First 100m thought mmm noisy, got after that nice a quiet.
I'm sure most of this is due to fact that the tyres are new, but first impression are:
Car rolls less in corners
Feels much more stable on these wider tyres that the 195/65's, feels like I am sitting in the car, rather than perched up high?
Smoother travel, less skittish on little bumps in the road (ie absorbs small impacts)
Does need a little more oomph to get going (an excuse to be heavy on that gas LOL), but also has a lot more momentum once it's going.
Only a couple of small journeys, but I don't think I can detect any perceptable change in economy.
tbh the '45' profile hasn't made the ride harsh, just more precise. I'm glad I didn't go woth the 18's as the aspect ratio for gearing was 35 or even 30 and I think this would have been too harsh for an MPV, maybe fine for a golf etc, but not my bus
Everyone who's been in says the ride feels good.
Best of all it looks marvellous, the new wheels really finish it off. I went with RS6's because I didn't want it to look racerish and RS8's would have taken too long to clean.
This is the first time I have bought alloy's for a car and first time I have increased the tyre size and I'm pleased I have. I am getting the allignment checked today cos I have noticed a pull to the left which I never noticed with the old tyres on (they were old, when I got the wheels off, the old tyres looked and felt plastic rather than rubber!).
10/10 for the wheels and tryes (glad I went expensiveish)
10/10 for service
I can recommend the 225/45/R17 94Y on the 17" rs6 alloys for the sharan. There is enough tyre that it looks like standard 16" alloys around the wheel arches, but just look better than the 16's if you know what I mean.
So go for it peeps, sharan plus 17" wheels = good LOL
PS: Edit - Another little drive tonight and best description is quiet and sure footed, do feel a lot more confident, seems to handle much more positive and predictable.