Been working on the Clubman 'allroad' project over the Christmas period and installed the 30mm strut spacers front and rear.
With the additional height in the sidewall of the oversize tyres, this raises the whole car by around 60mm - 65mm ( or over 2 inches ).
Strut spacers are polyurethane and look like this.
Install is easy, just remove the struts complete and fit the longer bolts along with the spacer.
Re-installing the strut had me scratching my head for a while, but I figured out it was possible to bolt up the top and then use a length of wood vertically under the lower sprint mount to compress the spring using a trolley jack (while the car was on stands) - then the bottom of the strut would drop into its carrier.
Adding the strut spacer adds positive camber, so I needed to adjust the top strut mounts to restore some negative camber.
The top strut mount bolts are already slightly oval (but the stock setup uses a locating pin).
I elongated the mounting holes by 3mm towards the engine both sides.
Stock bolt holes were approx 13.85mm - I ended up with a little over 17mm.
Torquing down the strut bolts with the struts as close towards the engine as the longer elongated holes allows seems perfect (although I'll get a full alignment to confirm). Certainly the car drives exactly as it did before.
Rear strut spacer install was super simple, the back struts are a heap quicker and easier to remove.
I installed adjustable lower control arms so that I could dial back in the correct geometry (as the stock camber adjustment on the rears does not have the required range).