Quote:
Originally Posted by flybigjet
Excellent! I did this on my e46 M3 for road trips-- it was worth the peace of mind.
A few questions:
1. what tire diameter did you go with? Conti's or Kumho?
2. I'm assuming this clears both front and rear? (On my M3, if you got a flat on the rear, you had to swap a front to the rear, then install spare on rear.
3. do you have part numbers for jack, handle, wrench, and foam storage mount?
4. Big picture pricing?
THANKS!
R.
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1.
I went with the Kumho 135/70/19 for a couple of reasons
It has a listed rim width range of 3.5-4.5" (versus 3-4" for the Conti) so I thought it might fit the 5" rim a little better
I plan to run taller than stock tires in the near future - 255/35/19 front (26.0") and 275/35/19 rear (26.6")
However, the decision was also based upon my assumption that the Kuhmo would be around 26.4" tall (neither Kumho nor Tire Rack have a diameter listed anywhere that I can find)
As I mentioned above, if the revs per mile listed by Tire Rack are correct the Kumho is probably closer to 26.7" tall
For stock tire size diameters or smaller, I would probably recommend getting the Conti
2.
Since the rim clears the front it should have no problem on the rear, but to be honest I didn't actually check
I only spun the wheel while the car was on the lift to make sure it cleared the front caliper and turned it from side to side to check for any interference (suspension was at full droop)
I have not test driven my car with the spare on to make absolutely certain there are no issues
Because the Kumho tire is actually a little taller than expected, there is a slight chance it could rub the front fender liner (for example, under full compression) but it should be minor if it does
3.
Part Numbers
BMW Emergency Alloy Wheel
36-11-6-775-450
BMW Tool Carrier (Foam Tray)
71-10-6-786-508
BMW Jack
71-12-6-754-372
BMW Jack Crank
71-12-6-756-310
BMW Lug Wrench
71-12-6-788-617
4.
Vincent @ Bimmerzone gave me a pretty good deal since I was willing to be the guinea pig on this
Ballpark I would say at least $500-$600 for everything (more if you want the Conti)
5.
You will need a centering ring to run the 74.0mm hub bore wheel on the M2's 72.56mm hub (which Bimmerzone provides if you buy a kit from them)
I don't know if these are available from BMW although it is possible since the E70 X5M runs a 74.0mm front hub and a 72.56mm rear hub (don't ask me why)
Additional stuff I got from my local dealer (there are much cheaper alternatives)
BMW Luggage Compartment Floor Net
51-47-9-410-838
BMW Luggage Compartment Tie Down Straps
71-10-8-045-545
BMW All Weather Cargo Mat - Basic Line (Black)
51-47-2-357-214
6.
I hope that helps