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bemm52
30th October 2017, 09:34 PM
What is the thread size on spare wheel hold down bolts?

Cheers Paul
87County
30th October 2017, 09:42 PM
on S3s and 110s - same as wheel stud thread
JDNSW
31st October 2017, 05:44 AM
Not on the S3 I have. As far as I know, all bonnet spare wheel mounts are threaded for 1/2"BSF. The bolts are specials, with heads to match the wheel nuts so you can use the wheel brace on them. This is 9/16"BSF (1/2"W) for Series 1,2,2a except very late 2a, and 27mm for very late 2a and Series 3.

But of course, there is no guarantee that the mount you have matches your vehicle - or that it has the original type of wheel nuts!
gromit
31st October 2017, 05:46 AM
What is the thread size on spare wheel hold down bolts?

Cheers Paul

I know that the head size matches the wheel nut size but not sure about the thread. Did it change ?
It's a special bolt with an oversize head and cross drilled for a split-pin.

Search results for: '347262, 345779' - Paddock Spares (http://www.paddockspares.com/catalogsearch/result/?q=347262%2C+345779)



Colin
B.S.F.
31st October 2017, 07:51 AM
3/8" BSF with wheel nut size head for 80" and some early 86/107 ..W.