Cost-Effective Extended Studs - 2009+ Cadillac CTS-V...
06-29-2010, 07:59 PM
#1
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Cost-Effective Extended Studs - 2009+ Cadillac CTS-V... For those of you interested in installing a mild spacer on your 2009+ Cadillac CTS-V, here is the cost-effective OEM quality solution to give you a few more threads to work with on your lug studs;
- Stock OEM GM lug stud part number;
- 11588811
- Stock OEM GM lug stud for 7mm more usable thread;
- 11588810
Stock on the right, extended on the left. As you can see, there is 7mm more usable thread with the unit on the left...
Extended studs installed...
The entire set can be had from the dealership (set of 20) for around $90.00. This is a great option for someone interested in installing up to a 10mm spacer without much cost involved. You could get up to a 12mm spacer, but you'd only have around 6.5 lug nut turns to work with, which is ok according to the DOT, but I like to see a bit more.
Please note, the US DOT REQUIRES SIX TURNS at a minimum. They are rather strict on this rule, so I recommend not to violate it.
I am not nor is National Speed, Inc. responsible for any mishaps, accidents or incidents due to attempting this modification. It's as straight forward as installing stock lug studs (because that's what it is), but I still have to say it.
One thing to note, the hub-centric lip on the hub extends out 11.50mm, which means if you are installing a 10mm spacer, you may or may not have enough lip:wheel contact to keep wheel wobble out of the equation. I'd recommend spacers with hub-centric lips incorporated to ensure this does not occur. But for anything under 9mm, I believe you'd be ok installing directly.
Just a bit of useful information I thought the community would like on the records.
- Stock OEM GM lug stud part number;
- 11588811
- Stock OEM GM lug stud for 7mm more usable thread;
- 11588810
Stock on the right, extended on the left. As you can see, there is 7mm more usable thread with the unit on the left...
Extended studs installed...
The entire set can be had from the dealership (set of 20) for around $90.00. This is a great option for someone interested in installing up to a 10mm spacer without much cost involved. You could get up to a 12mm spacer, but you'd only have around 6.5 lug nut turns to work with, which is ok according to the DOT, but I like to see a bit more.
Please note, the US DOT REQUIRES SIX TURNS at a minimum. They are rather strict on this rule, so I recommend not to violate it.
I am not nor is National Speed, Inc. responsible for any mishaps, accidents or incidents due to attempting this modification. It's as straight forward as installing stock lug studs (because that's what it is), but I still have to say it.
One thing to note, the hub-centric lip on the hub extends out 11.50mm, which means if you are installing a 10mm spacer, you may or may not have enough lip:wheel contact to keep wheel wobble out of the equation. I'd recommend spacers with hub-centric lips incorporated to ensure this does not occur. But for anything under 9mm, I believe you'd be ok installing directly.
Just a bit of useful information I thought the community would like on the records.
07-26-2010, 11:52 AM
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Working on an affordable option for even longer studs, these ones will measure around 90mm in total length, around 70mm of shank length. These new studs should accommodate between 15-18mm spacers.
I'll report back with documentation after we give it a shot.
I'll report back with documentation after we give it a shot.
