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  #1  
Old 12-19-2008, 11:46 PM
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Anyone have a full size 18-inch spare in X5?

I know some models (3.0 or 4.4) came with a full size spare, but think most spares are 17-inch. Did anyone's sport model come with an 18-inch spare (or larger?) If so, what is the width of the wheel and what is the tire size?
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Old 12-20-2008, 01:46 AM
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To my knowledge all 3.0 and 4.4 came with 17" spare. The outer diameter is still the same. 17" tire means more rubber.
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Old 12-20-2008, 02:30 AM
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I am aware of the need to maintain the same diameter--brakes, odo, speedo, etc. However, I could swear I read somewhere that some sport models came with 18-inch spares. The donuts on the 3.0 and 4.4 are 18-inch, so I am hoping someone has a full size 18, too....anyone?
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Old 12-22-2008, 12:19 PM
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Will this wheel in 18x8.5 fit over the front brakes on the is?

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  #5  
Old 12-31-2008, 02:16 AM
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No, our 2006 X5 4.4 with sport option but it has a full size 17-inch wheel and tire.
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Old 01-13-2009, 10:28 PM
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It FITS!!!!

I could not find a space saver anywhere in a junkyard--tried several that specialize in bimmers, but no one had it. So I halfheartedly ordered a space saver wheel (@$195 ) from a dealer, plus the chincy little 195/80R19 tire ($175 from TireRack). The wheel had to be shipped from Germany and I got tired of waiting for it to arrive, so took some measurements. Given that 235/65R17 fits in everyone elses X5, I calcluated that 235/60R18 should fit as well. This is also the same exact diameter and circumference as my snow setup (255/55R18 and within 1-2% of the summer 275/40R20 and 315/35R20). My only concern was then the width...

The wheel...hmmm. Taking no chances, I decided the snow setup's 8-inch wide rim posed the least risk. It is very tight in there, and I did not want to take a chance that an 8.5-inch width might stretch the tire a little to fit on the wider rim causing the load floor to touch the tire and rim. Turns out that was a very good call on my part. I cannot see exactly what is left for clearance between the top/face of the new tire & wheel, but I'd be surprised if it is any more than 1/4-inch. 1/2-inch would have been too much!

All told I ended up spending about the same (about $20 less, actually) than a new space saver would have cost me. I lost the little "tray" that comes underneath the load floor with the space saver, but I never used that anyway. Now I have the comfort and security of a full size spare for my 4.6is.

Here is the proof.

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Old 01-13-2009, 10:35 PM
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Quote:
Originally Posted by Budget M3
Will this wheel in 18x8.5 fit over the front brakes on the is?

Yes, someone here has these for winter on his 4.6is.
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Old 01-13-2009, 10:40 PM
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Quote:
Originally Posted by LeMansX5
Yes, someone here has these for winter on his 4.6is.
Good to know...however, these are 8.5-inch width so probably would not work as a spare to fit under the load floor.
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Old 01-14-2009, 03:34 AM
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Thanks for sharing at this forum.
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