displaying posts 1 to 6 of 6

Author Subject: What length bolts do I need when using 20mm spacers?
thomo6

Regular

Location: York

Registered: 17 Oct 2010

Posts: 104

Status: Offline

Post #1
Just wanting to know what thread length wheel bolts to use with 20mm spacers and standard 18mm off set alloys. Currently have threaded bars fitted that I want to remove and replace with bolts.

Many thanks.
Posted 12th Jan 2015 at 20:59
MisterGTR

Senior User

Location: Glasgow

Registered: 05 Aug 2014

Posts: 675

Status: Offline

Post #2
As I've found out you'll have to measure it yourself.

What I reckon is that 18mm of thread is presented to a standard hub. So you will need 38mm visible thread including the spacer. BUT I'm waiting on replacement bolts to confirm my measurements.

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Turned 40 and in true cliched fashion buying one of the cars of my teenage dreams!
Posted 12th Jan 2015 at 21:36
thomo6

Regular

Location: York

Registered: 17 Oct 2010

Posts: 104

Status: Offline

Post #3
MisterGTR wrote:
As I've found out you'll have to measure it yourself.

What I reckon is that 18mm of thread is presented to a standard hub. So you will need 38mm visible thread including the spacer. BUT I'm waiting on replacement bolts to confirm my measurements.



Thanks MisterGTR, I would appreciate any update once you have yours.
Posted 12th Jan 2015 at 21:41
MisterGTR

Senior User

Location: Glasgow

Registered: 05 Aug 2014

Posts: 675

Status: Offline

Post #4
I tested out this morning. I don't have locking nuts or replacement spigots (I'm having to return the whole oz kit), so didn't do a full fit and drive. But the 2 I put tightened up properly, with no play in the wheel and you can see from the photo about 12mm is covered in copper slip which is what was in the hub (at least). The bolt was presenting around 19-20mm from the wheel. So I'm guessing there was more than 12mm of the bolt in the hub, it just didn't get coated in copperslip from the hub.

Hope my rambling makes some sense and helps.

MisterGTR has attached the following image:

________________________________________

Turned 40 and in true cliched fashion buying one of the cars of my teenage dreams!
Posted 13th Jan 2015 at 12:56
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

Status: Offline

Post #5
not likely theres more than 12mm in the hub, dont think theyre even that thick

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Posted 13th Jan 2015 at 13:02
MisterGTR

Senior User

Location: Glasgow

Registered: 05 Aug 2014

Posts: 675

Status: Offline

Post #6
welshpug! wrote:
not likely theres more than 12mm in the hub, dont think theyre even that thick


Thanks WP.

________________________________________

Turned 40 and in true cliched fashion buying one of the cars of my teenage dreams!
Posted 13th Jan 2015 at 14:10

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