Broken Rear Spring
- Thread starter Nova2k7
- Start date
gingertosser
Active member
i went the cheap option £62 for a pair of sachs springs from car parts 4 less,i think they are owned by euro car part ,or you could spend £80 or £120 each or more depending on what you want.
and i fitted them myself easy job watch this... http://www.youtube.com/watch?v=UNPnt2M7fkQ
GT
and i fitted them myself easy job watch this... http://www.youtube.com/watch?v=UNPnt2M7fkQ
GT
Nova2k7 said:
In the region of £200-225 if a garage carries out the work to replace the pair of rear springs. Springs should be replaced in pairs.
gingertosser said:i went the cheap option £62 for a pair of sachs springs from car parts 4 less,i think they are owned by euro car part ,or you could spend £80 or £120 each or more depending on what you want.
and i fitted them myself easy job watch this... http://www.youtube.com/watch?v=UNPnt2M7fkQ
GT
Well i only need the one lol, the garage is going to call me with a quote
Springs should be replaced in pairs.
gingertosser
Active member
sachs spring that i bought....are on euro car parts are £61.20 per spring at the momenthttp://www.eurocarparts.com/ecp/c/BMW_Z4+Roadster_3.0_2004/p/car-parts/suspension-and-steering/suspension/coil-spring/?627112790&1&1f08a16a867bad674e0f58bfec3443a43c972d5a&000073
but as i said same spring.... http://www.ebay.co.uk/itm/Sachs-Rear-Coil-Spring-24673613-for-BMW-Z4-E85-/400654008704?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AZ4&hash=item5d48d70180
save your self £60 and this company is owned by euro car parts free p&p delivered next day
but as i said same spring.... http://www.ebay.co.uk/itm/Sachs-Rear-Coil-Spring-24673613-for-BMW-Z4-E85-/400654008704?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AZ4&hash=item5d48d70180
save your self £60 and this company is owned by euro car parts free p&p delivered next day
Nova2k7 said:
A pair of Suplex rear springs (decent quality replacement) will cost £120 including VAT and delivery and labour removing old springs, wheels and then fitting new springs including VAT in the region of £100.
-Tom- said:
Europart springs are not suitable for M Sport suspension as others have found out to their cost.
gingertosser
Active member
well £32.95 but they should be done in pairs otherwise you might have to do it all again next month.Nova2k7 said:gingertosser said:i went the cheap option £62 for a pair of sachs springs from car parts 4 less,i think they are owned by euro car part ,or you could spend £80 or £120 each or more depending on what you want.
and i fitted them myself easy job watch this... http://www.youtube.com/watch?v=UNPnt2M7fkQ
GT
Well i only need the one lol, the garage is going to call me with a quote
gingertosser said:
That is a really bad way to replace the rear spring on the z4 (typical american redneck style mechanics....).
First of all you risk breaking one of the rear stabilizer links (BMW TIS describes that you unbolt them), which is a nuisance (not an expensive part, 20quid or so, but you have to go to the dealer to get them), but second of all TIS describes also that you should unbolt the rear driveshaft (output shaft).
And they may have a point: breaking a 20gbp stabilizer link is a nuisance, breaking/damaging a 400gbp drive shaft is a pain :wink:
Very tempting to do it the easy way, until you break something
(been there, done that 
)gingertosser
Active member
i was a lucky boy then
The forces through while driving are in a totally different direction than when bending the drivecage.
BMW doesn't write that for nothing.
I have molested cv joints in the past in similar actions (not replacing springs, but bending the joints too far with just muscle power). Normally all the force go through the axle, through the balls, and then through the axle carrier, and the cage is free of force (just like with a ball bearing). But not when you bend the trailing arm excessively. You can strain the cage by bending the joint further than the free play in the design.
The cage in the cv joint is about 2mm thick steel (brittle) so that is something that can break easily.
If you take a cv joint apart you may understand what I'm talking about.
BMW doesn't write that for nothing.
I have molested cv joints in the past in similar actions (not replacing springs, but bending the joints too far with just muscle power). Normally all the force go through the axle, through the balls, and then through the axle carrier, and the cage is free of force (just like with a ball bearing). But not when you bend the trailing arm excessively. You can strain the cage by bending the joint further than the free play in the design.
The cage in the cv joint is about 2mm thick steel (brittle) so that is something that can break easily.
If you take a cv joint apart you may understand what I'm talking about.
I have taken a cv joint apart and put it back together, I'm quite sure 90% or independent garages would leave the driveshaft on while fitting springs. If someone comes back from getting springs fitted with a broken cv then I'll eat my words. But I doubt that will happen.GuidoK said: