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      03-19-2012, 09:57 PM   #129
GregW / Oregon
Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

Posts: 7,564
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Originally Posted by sig5x View Post
I went with a 135/80-18 sized spare tire (Pirelli PSpare) from

With a 26.5" diameter, this is a nearly perfect match for a rear 275/35-19 tire (calculates to 26.6"). I specifically chose this to minimize a L/R diameter difference on the rear differential. I figured that matching the diameter was less critical on the front.

Haven't had to use it yet, but I did install the spare wheel on a front corner when I removed a front wheel to inspect it more closely.
Good choice, how much was it?

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