I have just changed both my rear springs on my 2007 2.0i (With M-tech suspension) as the OSR spring was broken.
Originally i contacted SUPLEX UK on forum member 'Lillywhite' advice and to be fair they where very helpful and quoted me £125 for a pair of (Part no. 06229),
but after a last min search on ebay i found this seller selling Surplex spings for a 2.0lt, but the part number was not the same as SUPLEX gave me, so i asked if they had any with the part number 06229, and BINGO!:
http://www.ebay.co.uk/itm/BMW-Z4-ROADSTER-2-2-L-manual-Rear-Coil-Springs-Pair/330855695500?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D8725396059049593125%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D330855695500%26
£65.31 the pair bargin!!
The are advertised as for a 2.2lt but i too the gamble as the part number matched that which 'Lillywhite' & Surplex had told me.
I have seen people on here fit the wrong springs on Z4's with M-tech suspension and there factory lowered cars end up 3" taller than normal at the back, but luckily these are the right ones
Its Not impossible to fit them on your own and its not a hard job, but it would have been alot quicker and easier if i had someone with me to push down the suspension arm. I used 2 iron bars and swore a lot but got the job done.
Just to note, when you jack the car up at the back for any reason, once its then back on the ground itll sit a inch or so up, even if u sit in the boot? I dont know why this is but i noticed it when i changed my alloys last year so half expected it (altho at first i was a little worried id had actually got the wrong sized springs "Phew!!"
Originally i contacted SUPLEX UK on forum member 'Lillywhite' advice and to be fair they where very helpful and quoted me £125 for a pair of (Part no. 06229),
but after a last min search on ebay i found this seller selling Surplex spings for a 2.0lt, but the part number was not the same as SUPLEX gave me, so i asked if they had any with the part number 06229, and BINGO!:
http://www.ebay.co.uk/itm/BMW-Z4-ROADSTER-2-2-L-manual-Rear-Coil-Springs-Pair/330855695500?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D8725396059049593125%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D330855695500%26
£65.31 the pair bargin!!
The are advertised as for a 2.2lt but i too the gamble as the part number matched that which 'Lillywhite' & Surplex had told me.
I have seen people on here fit the wrong springs on Z4's with M-tech suspension and there factory lowered cars end up 3" taller than normal at the back, but luckily these are the right ones
Its Not impossible to fit them on your own and its not a hard job, but it would have been alot quicker and easier if i had someone with me to push down the suspension arm. I used 2 iron bars and swore a lot but got the job done.
Just to note, when you jack the car up at the back for any reason, once its then back on the ground itll sit a inch or so up, even if u sit in the boot? I dont know why this is but i noticed it when i changed my alloys last year so half expected it (altho at first i was a little worried id had actually got the wrong sized springs "Phew!!"
