Newbie - Purchased an E89

[Anonymous]

Do you have the CIC map / idrive system...if so can send you a diagnostic pdf....

Radio wise I find it not as good as my Volvo / Mini but still ok, could be the diversity aerial unit...

When you went for the run did you have the whippy fitted?

 

[firebobby]

The whippy

Thanks, decided early on that I was going to try and buy from the forum for that very reason.

Yes I think that too, for my budget I’m extremely happy with what I managed to purchase. Good thing is it needs very little done to it as it’s got most things I want, 296’s heated M seats, PDC F&R, cruise, MFSW on thing that might need to change is back to a Whippy as the reception is really poor up here. One in the boot that came with it. Either that or upgrade sound system completely but that’d be about it at the moment

The E89 uses a complex 4 FM channel and 1 AM channel diversity aerial system..the whippy although essential for aerodynamic stability and style does not contribute massively to FM signals...not sure what you are trying to tune in?

Whilst agreeing with the aerodynamic stability claims of the whippy (i felt a massive increase in downforce) i removed mine for a stubby as the loss in performance due to the increased aero drag was just to much of a penalty
To live with.
My radio reception is fine using the bmw stubby
Rob

I suppose with the 2.0 engine, you need as little drag as possible Rob

 

[Smartbear]

The whippy

The E89 uses a complex 4 FM channel and 1 AM channel diversity aerial system..the whippy although essential for aerodynamic stability and style does not contribute massively to FM signals...not sure what you are trying to tune in?

Whilst agreeing with the aerodynamic stability claims of the whippy (i felt a massive increase in downforce) i removed mine for a stubby as the loss in performance due to the increased aero drag was just to much of a penalty
To live with.
My radio reception is fine using the bmw stubby
Rob

I suppose with the 2.0 engine, you need as little drag as possible Rob

Of course, when you’ve only got 295ftlb of torque you need every bit of help possible
Rob

 

[Lazza]

I switched to non run flats and upped the profiles slightly to 235/35/19 & 255/35/19. Way better ride than before along with being much quieter and better grip, especially wet. I went for Uniroyal Rainsport 3 but will be trying F1 or PS4S next.
As for radio reception, mine was pretty poor but it turned out to be a bit of corrosion on the connector on the aerial booster hidden away on the left side of the boot. Once that was cleared up reception was great. I’m saying “was” because I fitted a Pure Highway 400 to add dab & Bluetooth streaming so don’t use the radio now.

 

[Argyll Andy]

I switched to non run flats and upped the profiles slightly to 235/35/19 & 255/35/19. Way better ride than before along with being much quieter and better grip, especially wet. I went for Uniroyal Rainsport 3 but will be trying F1 or PS4S next.
As for radio reception, mine was pretty poor but it turned out to be a bit of corrosion on the connector on the aerial booster hidden away on the left side of the boot. Once that was cleared up reception was great. I’m saying “was” because I fitted a Pure Highway 400 to add dab & Bluetooth streaming so don’t use the radio now.

I’ll give that a go and see how I get on

I put a DAB Kenwood system in my 3 series for streaming and phone connectivity so thinking about that too. Fully fitted, Mic, all connectors etc under £150 in January sales.

 

[ronk]

Congratulations - enjoy your new toy

 

[maxman]

You look to have bought a lovely z4,the engine in the 23i is a sweet motor

 

[Argyll Andy]

Do you have the CIC map / idrive system...if so can send you a diagnostic pdf....

Radio wise I find it not as good as my Volvo / Mini but still ok, could be the diversity aerial unit...

When you went for the run did you have the whippy fitted?

No, It doesn’t have the CIC/idrive. A standard stereo I think.

Upgraded my 3 series to Kenwood DAB, don’t really get huge digital coverage here but decent analogue reception. I’ll have a look at the connections and see what’s what.

The car’s fitted with a stubby but a whippy was kindly supplied by the previous owner. Was going to swap to see if it made a difference.

 

[Argyll Andy]

You look to have bought a lovely z4,the engine in the 23i is a sweet motor

Yes I have and gave to say I’m very happy with the engine

 

[Argyll Andy]

Nice buy , the 296s are 8j F + 9j R , will feel so much better on non runflats & no reason at all why you cant switch the rear profile from 255 30 19 to 245 35 19 . Fronts i don't think are a problem as stock on 225 35 19
Got there in the end

@mr wilks

Sorry to revisit this but been managing to drive my Z a fair bit over the holidays.

Getting more used to the run flats but still going to change them.

Was looking on the forum and almost everyone is saying change to Michelin’s and some saying Goodyear’s but I’ve noticed you’ve just recommended Vredi’s to a member who asked the same question as I did about increasing the rear profile from 30’s to 35’s

In your opinion do you think there’s much difference between these three tyres on the Z? Local tyre place is a Vredi dealer and pushes these relentlessly over anything else but always concerned that as an approved stockist that’s all to do with bigger margins on their stuff

I noticed @Redant said about keeping the 255 for more wheel protection, do you think this would this be an issue on my 296’s?

Andy

 

[Redant]

@Andy, Seems like me and you are treading similar paths right now. One thing I can say is that I have learnt a lot over the last couple of weeks on wheels and how little I knew about tyres in general

Check out the excellent tyre/wheel sticky if not done so already >> https://z4-forum.com/forum/viewtopic.php?f=49&t=107556

Main thing that I learnt was that I had misunderstood (for along time) the tyre sizing convention used i.e for my 296's they came fitted with
255/30/19 rears while my fronts were 225/35/19. The mistake I made was that I could simply increase the rear profile just by getting a 255/35/19 but while that would increase it , it would have lead to an unintended increase in the diameter of the rear wheels in comparison to the front.

I had previously understood the tyre wall width measurement to be in mm and not as a % of the width of the tyre and so was completely oblivious to this!

So for the rear the units of measurements on my 296's are 255mm/30%/19inch.

Another thing I learnt was about unsprung weight. One of the benefits of going from RF to NRF is that you also end up reducing the unsprung weight. This means the suspension system is able to keep the tyres in better contact with the road since the RF tyres being lighter are easier and quicker to move and adapt. This benefits the ride and it become less jittery on rougher surfaces - something which you noticed on your drive back home on RF's. The combination of better rubber on NRF with more forgiving sidewalls with lower unsprung weight all will contribute to a better drive and I will be ordering myself some Goodyear Assymetric 5's to enjoy the summer.

Lots of helpful poeple on here and allways useful info as well.