Do I Need Extended Wheel Studs? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jbug187 · 02-28-2024, 09:30 AM

During my last track day, a fellow twin driver (he was on GR86 and I have a BRZ) mentioned that I really needed to install extended wheel studs. I didn't think that was correct, but wanted to check with the community in case I'm mistaken. Details below. Any advice is appreciated. Thanks.

Winter Configuration

Wheels: Stock
Spacers: KSP
Thoughts: Since the KSP spacers have their own studs built in, I don't need to extend the studs built into the rotor. In fact, if the studs built in to the rotor were extended, I don't think I'd be able to mount the KSP spacers at all?

Summer Configuration

Wheels: Aodhan AH09
Spacers: None
Thoughts: Since these wheels mount directly to the rotor without any spacers I should be fine with the regular studs?

foshjowler · 02-28-2024, 10:35 AM

Extended studs aren't needed for either of those situations. The only thought I'd have is that the stock studs aren't known for being great, so a higher quality stud wouldn't be a terrible idea if you're swapping wheels a lot.

EndlessAzure · 02-28-2024, 10:00 PM

You only need extended studs if you run slip-on spacers

Desertnate · 02-29-2024, 03:40 PM

While extended studs might not be needed, I have found longer lug nuts do wonders for making the wheels easier to swap.

I swap my wheels pretty frequently and went with some aftermarket spline-driven nuts. They are longer and much easier to use than the short, stubby OEM ones. I went with some with closed ends for peace of mind.

Matt93SE · 03-01-2024, 03:09 PM

as others have said, longer studs aren't necessary, but if you plan to track the car and frequently swap/ rotate wheels, then stronger studs would be a great idea. The ARP studs for these cars are also longer, but that's not the main intent.

I know lots of people have had issues with the OE studs, so it wouldn't hurt. but it's not something I would prioritize over seat time or good brake pads, fluid, etc if you're playing within a limited budget. but it is a top-10 on the good practices..

.... FWIW, I've used ARP studs on all my race cars and have swapped wheels hundreds of times with air tools/electric impacts every time. I have damaged ONE ARP stud in that time because I cross-threaded a lugnut going on one time. otherwise, >20 yrs of HPDE and racing and I've never had a failed wheel stud. it's an investment you only need to make once.

02-28-2024, 09:30 AM	#1
jbug187 Member Join Date: Oct 2021 Drives: 2022 Subaru BRZ Limited MT Location: NY Posts: 22 Thanks: 20 Thanked 13 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Do I Need Extended Wheel Studs? During my last track day, a fellow twin driver (he was on GR86 and I have a BRZ) mentioned that I really needed to install extended wheel studs. I didn't think that was correct, but wanted to check with the community in case I'm mistaken. Details below. Any advice is appreciated. Thanks. Winter Configuration Wheels: Stock Spacers: KSP Thoughts: Since the KSP spacers have their own studs built in, I don't need to extend the studs built into the rotor. In fact, if the studs built in to the rotor were extended, I don't think I'd be able to mount the KSP spacers at all? Summer Configuration Wheels: Aodhan AH09 Spacers: None Thoughts: Since these wheels mount directly to the rotor without any spacers I should be fine with the regular studs?

02-28-2024, 10:35 AM	#2
foshjowler Senior Member Join Date: Mar 2022 Drives: 2022 BRZ; 2014 BRZ Location: North Carolina Posts: 172 Thanks: 3 Thanked 96 Times in 65 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Extended studs aren't needed for either of those situations. The only thought I'd have is that the stock studs aren't known for being great, so a higher quality stud wouldn't be a terrible idea if you're swapping wheels a lot. __________________ 2022 BRZ (sold) 2014 BRZ 2014 Cayman Autox Videos

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02-29-2024, 03:40 PM	#4
Desertnate Spelling Impaired Join Date: Jan 2022 Drives: 2022 BRZ Limited WR Blue Location: St. Louis metro area Posts: 384 Thanks: 255 Thanked 157 Times in 105 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	While extended studs might not be needed, I have found longer lug nuts do wonders for making the wheels easier to swap. I swap my wheels pretty frequently and went with some aftermarket spline-driven nuts. They are longer and much easier to use than the short, stubby OEM ones. I went with some with closed ends for peace of mind.

03-01-2024, 03:09 PM	#5
Matt93SE Senior Member Join Date: Sep 2020 Drives: 2013 FR-S, 2017 BRZ Location: Houston-ish Posts: 115 Thanks: 21 Thanked 108 Times in 59 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	as others have said, longer studs aren't necessary, but if you plan to track the car and frequently swap/ rotate wheels, then stronger studs would be a great idea. The ARP studs for these cars are also longer, but that's not the main intent. I know lots of people have had issues with the OE studs, so it wouldn't hurt. but it's not something I would prioritize over seat time or good brake pads, fluid, etc if you're playing within a limited budget. but it is a top-10 on the good practices.. .... FWIW, I've used ARP studs on all my race cars and have swapped wheels hundreds of times with air tools/electric impacts every time. I have damaged ONE ARP stud in that time because I cross-threaded a lugnut going on one time. otherwise, >20 yrs of HPDE and racing and I've never had a failed wheel stud. it's an investment you only need to make once.

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