BMW Z4 Coupe | Advice

JackZ4 · Post by **JackZ4** » Mon Jun 17, 2019 12:01 pm

Hi Guys,

Looking for some advice....

I have a 2006 BMW Z4 Coupe Si, on Saturday I had the rear tyres replaced and aligned, but noticed something wasn't right on Sunday, car didn't seem very stable through the steering wheel and on country lanes when transferring weight from corner to corner, the car was swaying which didn't feel particular safe

I have decided to park the car up and am using my bike for work purposes, but wanted to know what the potential cause or causes could be?

I am no mechanic, far from it, but I have been reading a few posts and its edging towards rear shock absorbers as the most sensible answer, in this case, do you simply replace the rear shocks, or are other parts require replacing at the same time? It all seems like a minefield

Any advice is appreciated,
Jack

Capa · Post by **Capa** » Mon Jun 17, 2019 1:18 pm

Snapped rear spring?

skelters · Post by **skelters** » Mon Jun 17, 2019 2:41 pm

Get back to get the wheel balance checked along with the tyres.

Then get the alignment checked again.

Take one of the alignment monkey's out for a terrifying drive in it to show them what's happening.

Get the springs and shockers checked too but would be surprised if they hadn't already checked them out when the car was in.

JackZ4 · Post by **JackZ4** » Mon Jun 17, 2019 4:49 pm

skelters wrote: ↑Mon Jun 17, 2019 2:41 pm Get back to get the wheel balance checked along with the tyres.

Then get the alignment checked again.

Take one of the alignment monkey's out for a terrifying drive in it to show them what's happening.

Get the springs and shockers checked too but would be surprised if they hadn't already checked them out when the car was in.

Thanks Skelters, hopefully it is something simple like the alignment, be annoying if the chap hasn't done it correctly considering you pay for it all to be done to a specific standard

, but then again, it was a new chap working on my car who I didn't recognise and looking back at the paperwork I never received the alignment sheet which states whether it was in/out...

JackZ4 · Post by **JackZ4** » Mon Jun 17, 2019 4:51 pm

Capa wrote: ↑Mon Jun 17, 2019 1:18 pm Snapped rear spring?

I'm going to check the zed tonight after football and see if there is anything obvious, like you said, snapped spring, etc, otherwise I will go back to the garage for the alignment to be rechecked which Skelter mentioned

mmm-five · Post by **mmm-five** » Mon Jun 17, 2019 4:52 pm

If they're brand new tyres, it could simply be the release agent...or it could be loose wheel bolts

Wood Butcher · Post by **Wood Butcher** » Mon Jun 17, 2019 7:47 pm

I assume that before you had the tyres replaced the handling was fine, or at least better?

skelters · Post by **skelters** » Mon Jun 17, 2019 8:11 pm

mmm-five wrote: ↑Mon Jun 17, 2019 4:52 pm If they're brand new tyres, it could simply be the release agent...or it could be loose wheel bolts

Good call on the wheel bolts.

If it's a staggered set up make sure they've not mixed up the front and rear wheels and tyres.

I've had Goodyears, Falken, Goodyear and Michelin tyres on two different Z4's and never had tramlining when the new tyres have been fitted.

JackZ4 · Post by **JackZ4** » Fri Jul 19, 2019 11:50 am

Sorry for the late update been using the bike over the past month.

Returned to the tyre place and the alignment was re-checked, shown the screen so this is definitely ruled out....

Car went in for MOT on Tuesday and required new nearside and offside anti-roll bar links as the covers had failed, so not sure if this was a contributing factor to the handling issue but they have been replaced. The rear passenger shock absorber was worn, so both rear shock absorbers have been replaced and the handling issue has now been fixed

Hope this helps,
Jack

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