Quote:
Originally Posted by Dackelone
A quick check of RealOEM.com confirms that the X5 uses a M14 wheel bolt(s).
http://www.realoem.com/bmw/showparts...19&hg=36&fg=15
Our 1er cars use a M12 wheel bolt. I think that is a deal breaker in using an X5 spare wheel option.
But a better option would be using the spare tire option from an e60. Like this one maybe?
http://www.realoem.com/bmw/showparts...16&hg=36&fg=95
Even IF the wheel bolts were the same size... steel wheels require a different bolt head seat - where the bolt meets or sits inside the wheel lug holes. There are steel wheel bolts(rounded head bolts) and alloy wheel bolts(cone shapped). You really should use the correct wheel bolts.
This was the main reason why I went with the 17" bmw alloy wheel for my 135i. I did not want to carry around five extra steel wheel bolts. Plus my dealer gave me a swetheart deal on the wheel - they had instock.  |
Dackel,
You bring up a good point about the wheel bolts. The F10 535i and the E70 X5 both use M14 bolts (14mm diameter). The 1M and E9X M3 use M12 bolts.
However, it seems like the M3 guys are successfully using the wheel despite being made for a bigger wheel bolt as you can see here:
http://www.m3post.com/forums/showthread.php?t=253769. It also appears that Bimmerzone markets the wheel as fitting the E9X M3 here:
http://www.bimmerzone.com/BMW_Perfor...E90M3-KIT.html (I assume it is the same 18" steel BMW wheel). From my searching it appears that there is no 18" OEM BMW steel wheel that is made for M12 bolts, unless I have missed it.
As for the interface between the head of the wheel bolt and wheel being different on the steel wheels: realoem shows the same wheel bolt being used on the E70 steel wheel and regular alloy wheels, so it seems like it is meant to be used with standard wheel bolts.
And lastly, the E60 steel wheel link you posted (
http://www.realoem.com/bmw/showparts...18&hg=36&fg=10) and the spare alloy that you use are both 17" wheels, which will not fit over the 1M front brakes.