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      10-30-2011, 07:49 PM   #114
GregW / Oregon

Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

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Stock wheel for spare

Originally Posted by K-M3 View Post
This has probably been discussed before but thought I would ask.....

Has anybody used the stock OEM 18" wheel/tire combo as a full size spare, especially on long trips?? I was thinking, maybe the rear wheel/tire (18*9.5 wheel with the stock 265/40 tire, but an all season tire) will make a good full size spare to carry around, especially on long road trips.

I went for the rear wheel because, in case you have a rear wheel flat, then putting the front wheel/tire size on the rear may interfere with the proper working of the rear differential, given the different circumferences.

Any of you happen to know if the rear wheel/tire combo - if installed on the front for temporary use in case of an emergency - has sufficient clearances for the front, to avoid any sort of rubbing onto the surrounding structures??
I think a front wheel would be a better choice. The minimal circumference difference should not be an issue for temporary use. And certainly it's less of a difference than most of the compact solutions discussed here. The issues are it weighs a lot and takes up a large portion of your luggage capacity.

Greg Lake Oswego, Oregon, USA
2015 M4 Coupe - Silverstone/Sakhir/CF
2012 ML350