Creaky / Rattly Ride - 2014 Z4

Why do they need express permission from BMW? The most they need is something from your insurance company to say that you've declared this change to them but even that is your responsibility.

As for voiding warranty. While the factory warranty won't cover the aftermarket tyre for other items they'd have to prove that the changing of the tyres actually caused the failure.

Personally I'd go to my local trusted garage.
 
Hey redonblack. Mine are 18' so not quite the same as yours. I went for the Goodyear Eagles as they had a good wtite up on speed, economy and grip and were made specifically for sports cars. Getting them fitted by Tyresonthedrive.com for £450 on Xmas Eve. So just in time....
 
My 18inchers have the original RFT tyres on. Horrible tramlining in the wet.
Can't wait to wear them out and fit the Goodyear F1's.
Had them 17 inch previously.
Thought they were a great tyre and also listed as being quieter than the Michelin PS.

People worry about punctures, but all mine over the years have been nails and screws and would takes days to deflate.
I had a tyre pressure warning come up and you couldn't tell which tyre was going down, until I put a pressure gauge on each one.
Only major damage was when I ripped the side wall out of two tyres nearside on a pot hole.
No phone to get help in the countryside I just drove home 12 miles on the flat tyres!
No damage done to alloys.
 
Tyres are just a part of this and I can testify that a switch to normal tyres helps. But you also need to regularly feed the rubbers and simply acknowledge that over time the car will occasionally squeak and rattle, it's filled with plastic and rubber and it's a convertible with many many many moving parts. Despite all its faults, it remains the most loved car I've ever owned.
 
Maniac said:
Tyres are just a part of this and I can testify that a switch to normal tyres helps. But you also need to regularly feed the rubbers and simply acknowledge that over time the car will occasionally squeak and rattle, it's filled with plastic and rubber and it's a convertible with many many many moving parts. Despite all its faults, it remains the most loved car I've ever owned.
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hello .. just out of interest what do you use to feed your rubber? Gummipledge ??

all the best
 
Well that was a very interesting and unexpected result.

I had booked Tyresonthedrive.com to fit my new non run flat tyres to the 2010 Z4.

When they arrived they advised me that changing to non run flat would:

1) Invalidate my car insurance
2) Would result in a cracked rim on the first pot hole I hit
3) Would not work with the trye pressure sensors and would require the suspension to be checked over by BMW
4) Would be only a slight marginal gain in comfort

They were adamant that this would be a real problem to the stability and safety of the car.

They went off and I rang the BMW dealer. Spoke with the parts department who also conferred with a technician. They say, as long as all 4 are changed to non run flats, then there is absolutely no problem and no risk to the vehicle.


So....Im left with two completely opposite view points on exactly the same job.

Anyone with any thoughts on this, or sny advise at all?


Sadly these were a Christmas present, so thats gone out the window now..lol
 
1) Ring the insurance company first. Some class it as a modification, some just put a note on the insurance & others don't areas long as they're factory size.

2) Absolute BS!
Using Pirelli 245/40R18 tyres in RFT & non-RFT when going over a 30mm proud drop kerb the RFT tyre saw a 35-40% increase in average rim load & almost 300% increase in the maximum spot load force applied to the rim.
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3) Active tyre pressure sensors won't care, it's directly measuring air pressure. Passive/indirect tyre pressure calculation will actually cut in earlier as a non-RTF tyre will reduce it's rolling circumference more for the same pressure drop.

4) On non-RFT 245/40R18 to RFT 225/40R18 & 245/35R18 I pulled over several times because I thought the suspension had broken!
 
NigelM said:
Well that was a very interesting and unexpected result.

I had booked Tyresonthedrive.com to fit my new non run flat tyres to the 2010 Z4.

When they arrived they advised me that changing to non run flat would:

1) Invalidate my car insurance
2) Would result in a cracked rim on the first pot hole I hit
3) Would not work with the trye pressure sensors and would require the suspension to be checked over by BMW
4) Would be only a slight marginal gain in comfort

They were adamant that this would be a real problem to the stability and safety of the car.

They went off and I rang the BMW dealer. Spoke with the parts department who also conferred with a technician. They say, as long as all 4 are changed to non run flats, then there is absolutely no problem and no risk to the vehicle.


So....Im left with two completely opposite view points on exactly the same job.

Anyone with any thoughts on this, or sny advise at all?


Sadly these were a Christmas present, so thats gone out the window now..lol
Click to expand...
Most of that's a load of bollocks ! Just let your insurance know your changing to normal tyres ,I did took two mins and didn't cost me anything
 
And of course 19 inch RFT would be a real pain to remove and refit.
Perhaps just all an excuse not to do the job.

Only came across this when a back street garage I used tried to charge me £15 a wheel to change 17 inchers because they were run flats.
I asked why, they said harder to fit?
I said, but you have just fitted non run flats?
They charge me a £10 a wheel :)
 
I have the same summer wheels as you do and found them to be great for sport driving, but very noisy and uncomfortable on less than ideal surfaces. Will probably switch to non-rf as soon as I wear them down. In the meantime, I bought genuine winter wheels from BMW, and I was amazed by the improvement in comfort and the quieter ride. They have also good grip. About 2 degrees Celsius outside here in southern Sweden and I can still enjoy sporty riding. So far I've tested them only on a dry asphalt. When I bought them, it was about 9 degrees Celsius and I compared their braking action as soon as I had them on the car. Coming on a complete stop from very high speed takes considerable longer distance, with the ABS kicking in quite soon. But nothing to be worried about.
Remains to be seen how they perform on a wet or icy surface.

About squeaks. I confirm that using "Gummi Pfledge" on all rubber parts calm down most of the crickets. Also, make sure you don't have the seat moved all the way to the back, touching the back panel. That also makes annoying noises. Leaving a small gap helps.

P.S I am probably one of the few in Europe who bought their wheels this winter as I had to wait for Germany to actually produce them for me.
 
After lots of searching I found the housing around the rear view mirror was rattling (esp the bit that attaches to windscreen). I just gave it a squeeze and it went. I guess it will come back at some point but it has been silent again for months now and only takes a split second to give it a squeeze.
 
We've been running non-RFTs MPSS on the 19" 296 style wheels since June 2012 on our E89, no issues at all. Huge improvement in ride quality and no cracked alloys :thumbsup:

I can testify the the pressure sensors work just fine as a few months ago I had a sensor warning and on checking over the tyre I found a screw nicely wedged in between the treads. Fortunately the rear tyre were this occurred was getting close to needing replacing anyway, so a new set of rear MPSS were duly fitted.
 
jwa1 said:
After lots of searching I found the housing around the rear view mirror was rattling (esp the bit that attaches to windscreen). I just gave it a squeeze and it went. I guess it will come back at some point but it has been silent again for months now and only takes a split second to give it a squeeze.
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I found one like this ages ago, it was the hinge of the drivers side sun visor as it attached to the rear view mirror housing. A bit of spray silicone lubricant sorted it.
 
Maniac said:
jwa1 said:
After lots of searching I found the housing around the rear view mirror was rattling (esp the bit that attaches to windscreen). I just gave it a squeeze and it went. I guess it will come back at some point but it has been silent again for months now and only takes a split second to give it a squeeze.
Click to expand...

I found one like this ages ago, it was the hinge of the drivers side sun visor as it attached to the rear view mirror housing. A bit of spray silicone lubricant sorted it.
Click to expand...

We have the same issue with the passenger side sun visor, we found that if you didn't close it fully the rattle stops, but I'll try some silicone lubricant :-)
 
Most rattle ridden car I have ever owned, but just about all sorted now.
Except for the occasional rattle from what sounds like loose washer under the steering column.
 
My Z4 started rattling/buzzing in a bit of trim up high. It's a definite plastic against something sound but I've not worked out what against what yet :(
 
Kwikfit put on my non RFT's 5 days ago.. Continental P5s.. Been running around very happily since then with a more comfortable ride...happy boy :-)
 
My local garage has quoted me £704 inc Vat fully fitted and balanced (with any tweaks to the tyre pressure monitor included) to change my 255/30 R19 91Y (rear) and 225/35 R19 88Y (front) RFT's to the Continental equivalent on non-RFT's

His tyre man said I might find the ride a little bit 'loose' in tight fast corners as the alloy will 'lean' on the rubber tyre wall, rather than leaning on the enforced tyre wall as with the run flats.

Has anyone else noticed a less firm feel through tight corners after going onto non-RFT's?

Thanks.
 
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