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[GregW / Oregon]

Originally Posted by TVMA Doc

Would there be much of an issue with getting a new front comp pack wheel and using that as a spare on the back if it is even needed?

I see that the rolling diameter of the front is 25.8, the rear is 26.3 and most of these spares are coming in at 26. Would that put much strain on the diff?

IMO, it would not. Differentials are made for extensive cornering, which is essentially what you are doing with two different diameters. The advantage of the space saver spare on compact wheel is it takes up less space in the trunk and my weigh a few pounds less.

[Silvertige]

Shouldn't this be a sticky?

[surlynkid]

will any of these aforementioned choices clear a BBK or would i need a 19" spare to do that.

[HP Man]

The X5 steel wheel clears my AP Racing BBK if I use an 18mm spacer -- not sure about other BBKs.

[davesaddiction]

Great information. Going to have to do this.

Thanks, all.

Consider this another vote for a sticky.

[Port Canaveral M3 driver]

so much good information at this site!

[deepblonde]

Originally Posted by Dackelone

^^the only problem I see with using the above steel wheel (page one of this thread!) is that you have to NOT loose that plastic adpator PLUS you need different wheel bolts bc of the steel wheel. The bolt heads taper in a different fashion. The above steel wheel is from a X5. I am still kind of surpised this wheel clears the larger M3(&1M) brakes.

I don't think you can buy the complete spare wheel and tire like I did over here in DE. But you should be able to buy the alloy wheel and then source a mini donut from TireRack or the like.

Here is the alloy wheel for the M3 listed by RealOEM.com
http://www.realoem.com/bmw/showparts...74&hg=36&fg=95



Here are some pics of my spare tire setup on my 135i(same alloy wheel!)...








jack kit and tools = 71106773536 - 100 euros
alloy wheel/tire spare = 36110445045 - 120 euros

The original spare tire thread...
http://www.1addicts.com/forums/showt...ht=36110445045


Dackel

I saw this same type of 17 inch alloy on the front of an E92 M3 today, being driven through suburban Melbourne, so it appears this could be an alternative...

[WarrantyTracker]

Maxxis has a 155/70R18 for the same price as the 135. The diameter will be a tad larger but not much and should be closer to spec with the stock rear. I've ordered one and will give it a try on the BMW X5 steel rim from Tisher's.

[GreenGuy]

anyone in NY/NJ area have this spare donut? I would like to test on my e39 M5 to check for clearance/fitment prior to buying one. Would just require slapping your spare from your trunk on my m5 and spinning the wheel ensuring clearance. Should take 1hr tops. I will come to you with my jack, impact gun and torque wrench

[GreenGuy]

Originally Posted by GreenGuy

anyone in NY/NJ area have this spare donut? I would like to test on my e39 M5 to check for clearance/fitment prior to buying one. Would just require slapping your spare from your trunk on my m5 and spinning the wheel ensuring clearance. Should take 1hr tops. I will come to you with my jack, impact gun and torque wrench

anyone out there elsewhere that would be willing to do a test fit? I will find an M5 owner who is willing to test fit yours as the M5 community is interested in potential e39 fitment:

http://www.m5board.com/vbulletin/e39...18-e70-x5.html

[WarrantyTracker]

Mispost

[6spdg37s]

I did not consider making a spare for my m3. what i instead do is keep a summer rim/tire in the trunk during the winter and visa versa. depending on where I am going I throw in a low pro jack and a breaker bar/ 17mm socket. but at minimal keep the tire/rim with me so that road side could always switch it versus towing me .

[WarrantyTracker]

The breaker bar with 17mm socket is the ultimate take-along lug wrench, as far as I'm concerned.

My spare is still in my garage because I can't get the jack thing figured out. My floor jack weighs 150# and is five feet long. All the reviews I see on the "portable" floor jacks w/ case indicate they are a POS. I guess I'm going to get an old 5-series jack Y jack from EBay and hope for the best when I actually have to use it.

[pbonsalb]

I have a 25 lb Harbor Freight aluminum jack that I have been beating on for 6 years. I like it so much I bought another. They go on sale for $59. But lighter and more compact is a used jack from another BMW.

I also throw a summer or winter wheel in the trunk on trips, though I do not leave it there all the time. A compact wheel would take up less space and I might buy one if I ever find a cheap used one.

[WarrantyTracker]

So I went to the Harbor Freight page to see which jack you were talking about, and stumbled on a $20 scissor jack

http://www.harborfreight.com/automot...ack-66907.html

One of the reviews says it fits the jack pads on an E90. For $20, I'm going to order one and see what's up. The OEM ones go for $80-$100.

[pbonsalb]

I was thinking a factory jack from a junkyard might be around $20, but I have not priced them. At $80 to $100, I would be looking elsewhere also.

[Georgeair]

Thanks to Greg for this (and all his extremely clear and helpful posts!) and all the others that added to this. Finally got on with ordering all the bits today and looking forward to having a spare in a few days! Now to solve the jack issue...

One question - there was one mention of needing different bolts. Will the OEM wheel bolts on my car work with this setup or do I need something shorter/different?

[GregW / Oregon]

Originally Posted by Georgeair

Thanks to Greg for this (and all his extremely clear and helpful posts!) and all the others that added to this. Finally got on with ordering all the bits today and looking forward to having a spare in a few days! Now to solve the jack issue...

One question - there was one mention of needing different bolts. Will the OEM wheel bolts on my car work with this setup or do I need something shorter/different?

Standard bolts work. The conical tapered seats fit the holes, but are not fully-recessed.

[M3forMe]

Good info but I am confused. I use my car as a DD and would like a spare solution.

2013 ZCP car.

What are the part numbers needed to get everything I need? The info on the first post I am not sure if this will fit or is for my car.

[WarrantyTracker]

Originally Posted by M3forMe

Good info but I am confused. I use my car as a DD and would like a spare solution.

2013 ZCP car.

What are the part numbers needed to get everything I need? The info on the first post I am not sure if this will fit or is for my car.

I used those part numbers last month and it's compatible with my 2013 E92 ZCP.

[WarrantyTracker]

Originally Posted by JBasham

Maxxis has a 155/70R18 for the same price as the 135. The diameter will be a tad larger but not much and should be closer to spec with the stock rear. I've ordered one and will give it a try on the BMW X5 steel rim from Tisher's.

This Maxxis worked out well. As a 155, there's a smidge more rubber on the road, and the tire mounts on the rim quite well.

I measured the circumference mounted on the steel rim, and it is the same as the new rear Michellin PS2s that came mounted stock on my ZCP.

[WarrantyTracker]

Originally Posted by JBasham

So I went to the Harbor Freight page to see which jack you were talking about, and stumbled on a $20 scissor jack

http://www.harborfreight.com/automot...ack-66907.html

One of the reviews says it fits the jack pads on an E90. For $20, I'm going to order one and see what's up. The OEM ones go for $80-$100.

This jack works out fine. The top piece is the perfect size to fit in the jack points on my E92. The jack raises the car high enough to change the tire, no prob, with lift to spare. The foot plate is a little small, so I would put a square of lumber under there on a soft surface. It works much better if you lubricate the worm gear with synthetic grease and the other end of the works with some heavy oil.







In case the images aren't loading, go to the Flickr group: http://www.flickr.com/photos/jbasham...7632670852073/