edit, he also found the rings:The space saver wheel from the X6 (part number 36-11-6-768-861) mounted with a 125/70-18 space saver tire will fit on both the front and rear of the E9x M3 without a spacer. The only problem is that the center bore of the X6 wheel is a bit larger than the E9x M3's hub so you have to be very careful to center the wheel on the hub when tightening the lugs. I'd like to find an adapter to properly center the wheel on the hub but without an adapter this setp works fine at least at moderate speeds and for relatively short distances.
Edit: I found the proper hubcentric plastic rings here (74.1/72.56):
http://www.1010tires.com/hubrings.as...FU0wpAodcQqcmw $21/set of 4.
The M-Mobility kit is pretty good insurance against a flat (well that and AAA coverage which beats BMW Assist). At least I haven't experienced any problems after ~4K miles :thumbup:Has anyone come up with a solution yet for a Space Saver Spare tire that will work with an E92/E93 M3?
Just got the wheel. I don't think this is going to work; the wheel is a monster. It's six inches across; I just don't see how a 125mm tire is going to go on it.This thread may be worth a sticky. FWIW, Tire Rack has the 125/70 18 tire; although I could not find it on their web site, it was a simple matter to order over the phone. Cost was about $115 before shipping.
This is NOT the tire that is fitted to the X6, BTW--that's a 145/90 18 tire that would be way too tall for the E90/2/3.
Anyway, once I get the wheel, tire and rings I'll give it a go and post pics.
I compared the wheel to my existing 125/70 17 spare (from my old 330), and indeed a 125 section tire is laughably narrow compared to the 6" rim on the new wheel.Just got the wheel. I don't think this is going to work; the wheel is a monster. It's six inches across; I just don't see how a 125mm tire is going to go on it.
After hearing from someone on M3post.com that the 125/70 18 would fit on the X6 wheel, I decided to give it a shot.I compared the wheel to my existing 125/70 17 spare (from my old 330), and indeed a 125 section tire is laughably narrow compared to the 6" rim on the new wheel.
I just spoke with Tire Rack; I was hoping to find a compact spare in the 155/70 18 range, which would at least be close to the outer diameter of the stock wheel. No dice; the closest thing they've got is either the 155/90 OEM tire for use with the X6 (which is 2.5" bigger than the stock tire) or a 225/45 18 normal tire (at which point I've lost any 'compactness' and also most luggage space).
Any thoughts are welcome.
1. My guess is that a 2.5" difference in diameter is too much even for a temporary spare, but I guess I don't know that for sure.
2. Also, I've been operating on the theory that something like a 135 section tire won't fit on a 6 inch wheel, but I also don't know that for sure.
If neither of those options will work, I'll just send the thing back.
Here ya' go:See this post on M3post for a better tire solution:
Thanks, man. Weight savings is always good. Looks like it is available in US for ~US$225 or so.Just a bit of an update to this post as it seems to be the most visited when searching for the answer re a spare for the E90/2 M3.
I have found a similar better solution to this and the wheel is again from BMW it is this:
Wheel is a 7 series F01 spare, part number 36116796147 and size is a 18x4.5 inch, offset of -1, so it will clear the "normal" M3 brakes and requires no spigot ring as it is the same concentric hub size nor spacer. It is an alloy too and half an inch narrower than the X6 wheel so a few pounds lighter.
Tyre is the same Maxxis M9500S T135/70R18 104M or you can also fit a Bridgestone T145/70R18 TRACOMPA TRR3, both hard to find but invaluable in the boot if on a long trip or holiday.