So alloy rims that are 17 " with 71/2 width and ET 35 should fit 225 tyre, correct. I checked with the samba and the brick place online and our own blog, but it seems a borderline call.
I might need to add a 10 - 15 mm spacer just to be safe, would this rub against the body anywhere. What difference would this type of tire make to the ride of the T25. softer/harsher/smoother etc. how expensive are these tyres.