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E85/E86 Steering Problems (Solved)

Discuss problems you have had or are having with your Z4
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MJJamieson
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E85/E86 Steering Problems (Solved)

Post by MJJamieson » Sat Jan 20, 2018 10:47 pm

Official BMW Procedure.
32 31 ... Optimisation of electro-steering.jpg
32 31 ... Optimisation of electro-steering.jpg (145.79 KiB) Viewed 6741 times
32 31 ... Optimisation of electro-steering2.jpg
32 31 ... Optimisation of electro-steering2.jpg (154.33 KiB) Viewed 6741 times
32 31 ... Optimisation of electro-steering3.jpg
32 31 ... Optimisation of electro-steering3.jpg (146.1 KiB) Viewed 6741 times
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Kamuela
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E85/E86 Steering Problems (Solved)

Post by Kamuela » Mon Jan 22, 2018 4:06 am

Well, isn't that interesting. Looks like we've been doing it right. What's the date of this TIS update? Is this old information, or something BMW's just discovered?

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E85/E86 Steering Problems (Solved)

Post by GuidoK » Mon Jan 22, 2018 7:32 am

Interesting find.
I checked with my official TIS version that sits in ISTA-D. That is from 22-11-2014 (ver. 3.46) so quite old already (for ISTA terms, the old tis was from 2007). That version also has this page already albeit slightly different. These is no distance listed for D (here D=5mm), but you can read the 5mm on the picture with the caliper.
I first mentioned the method here on 19th of june 2015: https://z4-forum.com/forum/viewtopic.ph ... 3#p1153983 ; by then lots of people in DLD/NL had done this mod.
On the german z forum they first started experimenting with it and reporting it around may 2014:
http://www.zroadster.com/forum/index.php?threads/aktion-problemlenkung.59821/page-75#post-1943088


It never came up in me to look it up in the new TIS because the old one obviously never mentioned it.
Maybe the new tis has more answers to other previously not displayed/solved problems.
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E85/E86 Steering Problems (Solved)

Post by Joycey » Mon Jan 22, 2018 11:30 am

Yeah this is a great find, glad to see we're on the right track. Might be worth sifting deeper into TIS and see what else is there. :thumbsup:
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bladeowner
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E85/E86 Steering Problems (Solved)

Post by bladeowner » Mon Jan 22, 2018 3:29 pm

GuidoK wrote: Mon Jan 22, 2018 7:32 am I first mentioned the method here on 19th of june 2015: https://z4-forum.com/forum/viewtopic.ph ... 3#p1153983 ; by then lots of people in DLD/NL had done this mod.
Yes, thanks for the heads up Guidok :thumbsup: I did mine in June 2016 after reading your post. I initially moved mine 5mm but increased it to 10mm a few months later. There is no stickiness at all now but I can still 'feel' a difference between cold days and hot days (or when the heater has been on for a while).
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GuidoK
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E85/E86 Steering Problems (Solved)

Post by GuidoK » Mon Jan 22, 2018 3:36 pm

In theory as this is a TIS entry now (or apparantly has been for a few years now), a dealer can do this repair too. Albeit TIS writes that the steering column has to be removed, which costs time (and money). Probably to not frustrate the more clumsy bmw mechanics.
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E85/E86 Steering Problems (Solved)

Post by loftust » Mon Jan 29, 2018 12:41 pm

Is this thought to solve the steering wobble that many experience at motorway speeds? Assuming other aspects such as balancing and FCAB replacement have already been addressed.

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GuidoK
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E85/E86 Steering Problems (Solved)

Post by GuidoK » Mon Jan 29, 2018 1:52 pm

You mean the tramlining effect where the car is steered into the ridges of the tarmac caused by heavy lorries?
Thats mainly solved by ditching the runflats and maybe in limited effect adding rear trailing arm limiters (or rear trailing arm bushings that have the limiters build in).

Sticky steering is more an effect where it seems that a small magnet holds the steering in the center position and you have to break the steering wheel free from that magnet force before you can steer.
Z4 3.0i | ESS TS2+ | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | fully polybushed | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers | Sachs Race Engineering clutch

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E85/E86 Steering Problems (Solved)

Post by Rob_benton » Mon Jan 29, 2018 4:31 pm

loftust wrote: Mon Jan 29, 2018 12:41 pmIs this thought to solve the steering wobble that many experience at motorway speeds? Assuming other aspects such as balancing and FCAB replacement have already been addressed.
Solved mine after trying everything else. You have nothing to lose.
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E85/E86 Steering Problems (Solved)

Post by ionofchios » Wed Feb 07, 2018 6:01 pm

Just had a go at this, but can’t get enough leverage on the bolts with my hand up inside the dash. Mine’s and e86 and it has allen bolts, not torx. I’ve got an allen bit, then universal joint, short extension, then T piece (all 1/4 inch), but I can’t get enough leverage on it. There’s not enough room to get anything longer up in there either. I suppose I’ll have to take the whole steering assembly out if I can’t find a way.

Any advice?

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E85/E86 Steering Problems (Solved)

Post by mac27040 » Wed Feb 07, 2018 6:47 pm

so who's setting a stall up at ZEDfest to do this for people !!! :thumbsup:
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E85/E86 Steering Problems (Solved)

Post by Joycey » Wed Feb 07, 2018 9:29 pm

mac27040 wrote: Wed Feb 07, 2018 6:47 pmso who's setting a stall up at ZEDfest to do this for people !!! :thumbsup:
Ha, long as theres a free osteopathy session after :rofl: Takes me about 20mins to make the adjustment.
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Roundozo
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E85/E86 Steering Problems (Solved)

Post by Roundozo » Thu Feb 08, 2018 9:01 am

I can vouch for this fix. Done it on my coupe a while back and it's transformed the steering. Feels so much more planted on the road now. Great fix OP! :thumbsup:
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E85/E86 Steering Problems (Solved)

Post by andystone » Thu Feb 08, 2018 1:36 pm

I’d book for this done at zedfest!
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E85/E86 Steering Problems (Solved)

Post by GuidoK » Thu Feb 08, 2018 2:58 pm

Roundozo wrote: Thu Feb 08, 2018 9:01 amI can vouch for this fix. Done it on my coupe a while back and it's transformed the steering. Feels so much more planted on the road now. Great fix OP! :thumbsup:
You had sticky steering on your coupe?
Thats quite rare to have it on a FL car.
Z4 3.0i | ESS TS2+ | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | fully polybushed | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers | Sachs Race Engineering clutch

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