Miks15
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| posted on 28/3/09 at 07:29 PM |
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Thinking out loud.... sierra uprights
Following on from my ongoing front uprights problem im thinking about using sierra uprights. But i still want to keep my BMW wheels and have them the
same front and rear.
There fore i was thinking would it be possible to take the standard sierra hub and have it remachined to the BMW PCD. (5 x 120)
My first question is, what is the diameter of the sierra hub? Is there enough material to be able to change it to a 120mm PCD?
Failing this what are my other options regarding the matter?
Thanks
Mikkel
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meany
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| posted on 28/3/09 at 07:38 PM |
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i wonder if granada 5-stud hubs would be suitable, however, i have no idea on their geometry and similarity to sierra hubs.
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meany
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| posted on 28/3/09 at 07:41 PM |
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also the centre bore size is a issue to think about.
http://www.leightyres.co.uk/catalog/fitment.php
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Miks15
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| posted on 28/3/09 at 07:43 PM |
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The centre bore is greater on the BMW than on the sierra, so just to check that means i shouldnt have any problems should i?
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meany
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| posted on 28/3/09 at 07:48 PM |
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you could always have some spigot rings turned up to put in to sort that out.
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Miks15
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| posted on 28/3/09 at 07:50 PM |
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Sorry if this is a stupid question... whats a spigot ring?
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meany
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| posted on 28/3/09 at 07:54 PM |
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its just a ring to take up the difference in the centre bore sizes, most aftermarket wheels use them to fit specific hubs
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Miks15
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| posted on 28/3/09 at 07:56 PM |
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Does the center bore size have to be the same? Because the BMW bore is larger than the sierras?
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Steve Hignett
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| posted on 28/3/09 at 07:56 PM |
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quote:
Originally posted by Miks15
Sorry if this is a stupid question... whats a spigot ring?
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bram boekestein
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| posted on 29/3/09 at 11:37 AM |
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You need a spigot ring otherwise you will have a big whobble.
Your wheel is kept concentric on the centre bore. Studs are only there to keep the wheel on, NOT in the middle.
5x120 is maybe a little big on a sierra hub. Try the Wilwood pro spindle, they come in 5x120.65mm. Maybe you can switch the hub's only, but the
complete package isn't such a bad idea i think, I've looked at them for some time.
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