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E85 / E86 Z4 (2003-2008)
E85 Z4 convertible and E86 Z4 coupe talk with our BMW gurus here.

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  #1  
Old 04-21-2013, 07:19 PM
Patrick Gent Patrick Gent is offline
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Location: Plantation (Fort Lauderdale), Florida
 
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Mein Auto: 2007 M Coupe
M Mobility Kit

While I struggle with whether I shoud fill my trunk with a spare, I had to buy a new tank of goo for the mobility kit. The original one was a metal can that you put upside down in a little seat on a hose--you clipped the pump to the seat, and the goo dripped into the line and was fed to the tire through the hose.

The new canister is plastic, and has a tool to remove a tire valve and a long plastic snout to attach to the canister. I guess you remove the valve, use the snout into the hole to sueeze in as much stuff as you can, replace the valve and rotate the tire?
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  #2  
Old 04-22-2013, 09:08 AM
SD Z4MR's Avatar
SD Z4MR SD Z4MR is offline
(formerly SD 335is)
Location: San Diego, CA
 
Join Date: Jan 2011
Posts: 4,225
Mein Auto: '06 Z4 MR | '11 335is E92
Quote:
Originally Posted by Patrick Gent View Post
While I struggle with whether I shoud fill my trunk with a spare, I had to buy a new tank of goo for the mobility kit. The original one was a metal can that you put upside down in a little seat on a hose--you clipped the pump to the seat, and the goo dripped into the line and was fed to the tire through the hose.

The new canister is plastic, and has a tool to remove a tire valve and a long plastic snout to attach to the canister. I guess you remove the valve, use the snout into the hole to sueeze in as much stuff as you can, replace the valve and rotate the tire?
Yes, that's correct, but don't forget to inflate the tire after squirting in the goo! I wrote up the differences between the older and the newer M Mobility Kit on the BMW CCA forums. I'll look for it and post it here.

My line of defense in order of preference: AAA, BMW Assist, Liberty Mutual Road Assistance, tire patch kit, M Mobility Kit.
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Mine: 2006 Z4 Roadster (E85) | Interlagos Blue Metallic | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12
Hers: 2011 335is Coupe (E92) | Le Mans Blue Metallic | Black Dakota Leather | Dark Glacier Aluminum | 6MT | ED 5/12/11

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  #3  
Old 04-22-2013, 09:31 AM
SD Z4MR's Avatar
SD Z4MR SD Z4MR is offline
(formerly SD 335is)
Location: San Diego, CA
 
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Mein Auto: '06 Z4 MR | '11 335is E92
I had several posts on the M Mobility Kit on the BMW CCA Forums in response to a series of questions that someone asked about the Kit. Here's the first:

When I bought the car at East Bay BMW in Pleasanton, CA this past July, I noticed that the M Mobility Kit was missing. Since I was driving the car home to San Diego I insisted that they supply the kit. They went into the parts department and came back with the canister of goo. Not knowing that the Kit also came with a compressor, I ignorantly drove home with absolutely no way to fix any flat that might have occurred. When I got home and discovered that I had been shorted, I contact them and they agreed to supply a complete new Kit and shipped it to me.

There is a difference between the original Kit that came with the Z4 M Coupes and Roadsters and the Kit that BMW is currently selling. The old kit had a canister that was hard plastic. It was also attached to the compressor (upside-down) and the hoses were connected from the compressor to the canister and from the canister to the tire valve. The compressor (apparently) was used to literally blow the sealant out of the canister into the tire.

The new Kit has a canister that is soft plastic. In this kit, the tire valve is actually first removed from the tire with a supplied valve removal tool (extra valves are also supplied), the canister is connected to the tire valve and the sealant is squeezed from the canister into the tire. The valve is then re-installed and the compressor is used to inflate the tire to the recommended pressure. The new kit also comes in a nice zippered nylon bag with a BMW logo and a spiffy pair of nylon gloves to keep your hands clean. It also comes with some additional connectors that will inflate various rubber balls.

The canister that the dealer gave me was the old style and the Kit that they shipped to me was the new style. I was able to find a used old-style compressor on eBay so that I have period-correct parts, but I keep the new style Kit in the car. That said, I have not used either kit, and I would probably only resort to this as a last resort. My first resort would be AAA/BMW Assist/Liberty Mutual Roadside Assistance, with the Slime 1034-A T-Handle Tire Plug Kit (Amazon, $8.90) that I keep in the car a close second, depending on how convenient it would be to patch it and just be on my way.

Here's the second:

The compressor in the new Mobility Kit that I have looks like the one in the eBay picture except that mine is blue rather than black. The P/N is 71106777047. The new-style compressor has the gauge built into the compressor case and the hose and electrical cord are stored into a recess in the back of the compressor. The new-style canister has a large screw-top fitting and a screw-on cap with tube that attaches to the tire valve. The P/N is 71100415041.

The old-style compressor that I bought on eBay is a dark gray. The P/N is 71102282832-01. The pressure gauge is attached to the hose and the hose and electrical cord store inside the compressor case behind a flip-down opening that actually holds the canister upside-down. The old-style canister has a plastic fitting on top with an attached hose that screws onto the tire valve with another fitting on it for the hose from the compressor. The P/N is 71102282826 on the canister I bought on eBay and 71102282826.9 on one the dealer initially provided. While both old-style canisters appear identical the labels are different.

Given that the P/N is the same with a different suffix, the compressor shown on eBay is possibly a revised version of the old-style compressor where they've moved the pressure gauge to the case, like the new style. The canister shown is definitely the old style because you can see the hose attached to the fitting on the top.

Note that the Z4 M Maintenance Schedule calls for the canister to be replaced every four years. There is an expiration date printed on the label of each canister. The old-style canister that I bought on eBay expired in 8/2012, the old-style canister initially provided by the dealer expires on 11/2015, and the new-style canister provided by the dealer in the full kit has no expiration date on the label but has 141215 printed on the bottom (?).

I have some errands to run but I'll take pictures and post them later today or tomorrow, since, as they say, a picture is worth a thousand words!

And the last one:

Here's the pictures, old-style first followed by new-style:






__________________
- Tom
-------
Mine: 2006 Z4 Roadster (E85) | Interlagos Blue Metallic | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12
Hers: 2011 335is Coupe (E92) | Le Mans Blue Metallic | Black Dakota Leather | Dark Glacier Aluminum | 6MT | ED 5/12/11

BMWCCA #444696 - Click to join and a chance to win a 1-Day M School at the BMW Performance Center!



Last edited by SD Z4MR; 04-25-2013 at 05:33 PM.
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  #4  
Old 04-25-2013, 07:09 AM
Terry J. Harris's Avatar
Terry J. Harris Terry J. Harris is offline
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Join Date: Dec 2007
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Mein Auto: '05 Z4 3.0i & '08 X3.0si
Thanks, Tom!! I went from run-flats to non-run-flats with my '05 Roadster, bought the mobility kit and some additional canisters of some other form of goo as a backup.

ALSO went back and purchased a car jack from the dealership, once I realized my Roadster didn't come with a jack.
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  #5  
Old 04-25-2013, 07:50 AM
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vintage42 vintage42 is offline
BMW CCA 1405
Location: Louisville, KY
 
Join Date: Jun 2007
Posts: 1,018
Mein Auto: 1997 BMW Z3 1.9 5MT
Even though I have a compact spare, I carry this, which is bulkier then the BMW kit but probably cheaper:
http://www.tirerack.com/accessories/...um=CCKV2&ID=38
http://www.tirerack.com/accessories/detail.jsp?ID=39
Because it seems easier than trying to carry a full-size flat tire.

Last edited by vintage42; 04-25-2013 at 07:52 AM.
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  #6  
Old 04-25-2013, 11:49 AM
Patrick Gent Patrick Gent is offline
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Location: Plantation (Fort Lauderdale), Florida
 
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Mein Auto: 2007 M Coupe
Vintage--thanks! I had not thought, in my musings about buying a donut, that I woud have to get the flat full sized tire and wheel into the trunk.
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  #7  
Old 04-25-2013, 06:20 PM
sinbad4 sinbad4 is offline
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Location: MN
 
Join Date: Feb 2013
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Mein Auto: Z4M
I'm at a loss as to why this is superior to a can of Fix-o-Flat (or similar brand). I have used Fix-o-Flat for years with other cars and been very happy.
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  #8  
Old 04-25-2013, 06:45 PM
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vintage42 vintage42 is offline
BMW CCA 1405
Location: Louisville, KY
 
Join Date: Jun 2007
Posts: 1,018
Mein Auto: 1997 BMW Z3 1.9 5MT
The inflator kits bring the sealed tire up to full pressure (over 40 psi if needed) to allow 50 mph for 125 miles. With a Fix A Flat bottle you do not control or know the pressure, and must get the tire repaired immediately.
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