How much spacer is safe on stock rear studs? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wparsons · 04-29-2013, 01:33 PM

What's generally safe to run with the stock rear studs? I'm considering 10mm spacers but don't want to bother if I have to replace the studs.

King Tut · 04-29-2013, 01:42 PM

It seems most of the 10mm kits come with studs, so I wouldn't do it.

Cade01 · 04-29-2013, 05:30 PM

What is the rule? isn't it "seven threads engaged in the lugs minimum"? Don't quote me on that but I remember hearing something like that, so if you can't get them that far on the stud they should be replaced.

Tim_Asphalt_FRS · 04-29-2013, 06:04 PM

I've heard only 3mm on factory studs with spacers.

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OmarGC · 04-29-2013, 06:14 PM

Quote:

Originally Posted by Tim_Asphalt_FRS

I've heard only 3mm on factory studs with spacers.

This.

PRORICAN · 04-29-2013, 07:24 PM

Yup 3mm is fine but anything over that needs extended studs.

Size of Bolt or Stud Mininum Number of Turns

14x1.5mm 7.5
12x1.5mm 6.5
12x1.25mm 8
1/2"e; 8
9/16"e; 8

Found here http://adaptitusa.com/wheellugnuttorquing.aspx

wparsons · 04-29-2013, 09:44 PM

That's what I figured, thanks guys! I'll wait until I'm doing something more drastic to replace the studs (like when putting in adjustable UCA's maybe).

NoFear99 · 08-12-2013, 07:24 PM

I'm running 5mm spacers onto the rear without problems.

KONVERTER · 08-12-2013, 07:48 PM

I wouldn't use any spacer that is not hubcentric or does not have a hubcentric ring.

wparsons · 08-12-2013, 09:54 PM

Quote:

Originally Posted by KONVERTER

I wouldn't use any spacer that is not hubcentric or does not have a hubcentric ring.

You do realize that no one sells a 5mm hubcentric spacer, right? It's because the depth of the hub flange is more than 5mm so the spacer would need to have a different center bore or be thicker than the flange to be hubcentric on its own.

At 5mm the wheel (if it's hub centric) would still be centered by the actual hub.

KONVERTER · 08-12-2013, 09:56 PM

That is why I would never use a spacer that is not hub centric. That means no 3mm no 5mm etc...

I especially would never use those 3mm stamped / cast spacers

Any spacer must be hub centric to the wheel as well.

Sent from my Nexus 4 using Tapatalk 4

pche · 08-12-2013, 10:02 PM

Quote:

Originally Posted by KONVERTER

That is why I would never use a spacer that is not hub centric. That means no 3mm no 5mm etc...

I especially would never use those 3mm stamped / cast spacers

Any spacer must be hub centric to the wheel as well.

Sent from my Nexus 4 using Tapatalk 4

This^ replacing studs is an easy job. Don't do it at all if you're not gonna do it right

wparsons · 08-14-2013, 11:43 AM

Quote:

Originally Posted by KONVERTER

That is why I would never use a spacer that is not hub centric. That means no 3mm no 5mm etc...

I especially would never use those 3mm stamped / cast spacers

Any spacer must be hub centric to the wheel as well.

Sent from my Nexus 4 using Tapatalk 4

That's simply not facts, sorry. I'd agree with not using cheap stamped spacers, but a thin spacer is plenty safe.

The flange on the hub is usually around 10-12mm on most cars, which means with a 5mm spacer the wheel is still centric on the hub itself. That's also the reason why you only see hub centric spacers in > 10mm thicknesses for most vehicles.

hmong337 · 08-14-2013, 12:24 PM

Quote:

Originally Posted by KONVERTER

That is why I would never use a spacer that is not hub centric. That means no 3mm no 5mm etc...

I especially would never use those 3mm stamped / cast spacers

Any spacer must be hub centric to the wheel as well.

Sent from my Nexus 4 using Tapatalk 4

HUH? I've been using an aluminum slip-on 5mm spacer for my work equips on my mr2 for the last 7 years. All is fine and dandy and absolutely no vibration issues or whatever.

Stop spreading misinformation.

04-29-2013, 01:42 PM	#2
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	It seems most of the 10mm kits come with studs, so I wouldn't do it. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

04-29-2013, 06:04 PM	#4
Tim_Asphalt_FRS Is it fast? No. Join Date: Aug 2012 Drives: 2013 Scion FR-S Manual-Asphalt Location: Vista, CA Posts: 604 Thanks: 824 Thanked 164 Times in 122 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I've heard only 3mm on factory studs with spacers. Sent from my iPhone using Tapatalk __________________ 2013 (Rebadged) Toyota GT-86 {Perrin intake tube, aFe dry air filter, custom 2.5" exhaust, PLM overpipe, Kartboy crank pulley, Hotchkis springs, custom Flossy grip tape shorty, TRD shifter, Berk HFC, Whiteline Sway-bars} [Wanted: Delicious Stg 2 tune, Bilstein struts]

08-12-2013, 07:24 PM	#8
NoFear99 Senior Member Join Date: Jul 2012 Drives: FR-S Firestorm Location: QC,Canada Posts: 391 Thanks: 121 Thanked 143 Times in 81 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I'm running 5mm spacers onto the rear without problems. __________________ - 2013 Scion FR-S Firestorm - 2007 Lotus Exige S 280 Solar Yellow - 2007 Honda CBR 600RR - 2002 Bombardier Legend 800SE Website : http://nofear99.monchar.com

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04-29-2013, 05:30 PM	#3
Cade01 Senior Member Join Date: Jun 2012 Drives: '13 White FR-S, 09 Triumph St.3 R Location: Eugene, OR Posts: 812 Thanks: 30 Thanked 135 Times in 106 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	What is the rule? isn't it "seven threads engaged in the lugs minimum"? Don't quote me on that but I remember hearing something like that, so if you can't get them that far on the stud they should be replaced.

04-29-2013, 07:24 PM	#6
PRORICAN Senior Member Join Date: Jun 2012 Drives: BRZ Location: Cape Cod Posts: 804 Thanks: 872 Thanked 560 Times in 258 Posts Mentioned: 26 Post(s) Tagged: 0 Thread(s)	Yup 3mm is fine but anything over that needs extended studs. Size of Bolt or Stud Mininum Number of Turns 14x1.5mm 7.5 12x1.5mm 6.5 12x1.25mm 8 1/2"e; 8 9/16"e; 8 Found here http://adaptitusa.com/wheellugnuttorquing.aspx

08-12-2013, 07:48 PM	#9
KONVERTER Senior Member Join Date: Jul 2013 Drives: BRZ Location: LA Posts: 225 Thanks: 1 Thanked 69 Times in 44 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I wouldn't use any spacer that is not hubcentric or does not have a hubcentric ring.

08-12-2013, 09:56 PM	#11
KONVERTER Senior Member Join Date: Jul 2013 Drives: BRZ Location: LA Posts: 225 Thanks: 1 Thanked 69 Times in 44 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	That is why I would never use a spacer that is not hub centric. That means no 3mm no 5mm etc... I especially would never use those 3mm stamped / cast spacers Any spacer must be hub centric to the wheel as well. Sent from my Nexus 4 using Tapatalk 4

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