So, digging a little deeper, the spacer settings I like as a reference is on
this thread. 15mm front, 25mm rear on 17" Devonports. There's a nice amount of hooding on the wheels, less chance of kerbing and clipping, but more visible than stock.
But if I
Calculate/Compare Wheel Offset and Backspace between the Devonports and these Discovery wheels, I get this:
Which means that my wheels will appear as if on 27mm spacers front and back.
So I don't get a choice about the front - the wheel will be flush with the wheel arch. So the natural conclusion is to add 10mm spacers at the back, and I will end up with something like on
this thread.
I am guessing that the distance to the suspension is not a problem, given that there are people running 9J and 9.5J wheels which necessarily will be nearer? and I'm not on a T32 where I have bigger brakes necessitating spacing on either?
EDIT: and I'm settling on the 255/40 for reduced rolling resistance and speedo accuracy and big brand tyres.
UPDATE: Talking to the very helpful John @
LTC Tyres, I'll need...