safest spacer thickness for auto-X? rpf1 17x9 +45

[loogs]

Originally Posted by BlaineWasHere

17x9 et 45 with 5mm spacer and 255/40/17 ZIIs Camber is at -2 all around.

i was thinking of doing the 5mm spacer for the rear. do you recommend it? safety wise? all i hear is everyone saying how unsafe spacers are. thx

[CSG Mike]

Spacers are fine. We recommend getting some extended studs and open ended lugnuts though, if you're using any more than 5mm. You want to make sure your lugs have enough turns.

@ImperiousRex's car is on 17x9 +45 RPF1 with 20mm spacers in the front in this video. ARP studs and open ended lugnuts as well.

[ame="http://www.youtube.com/watch?v=XU4Sa3RCCV4"]Willow Springs International Raceway BRZ/FRS/GT86 lap record 1:30.778 - YouTube[/ame]

[loogs]

Originally Posted by CSG Mike

Spacers are fine. We recommend getting some extended studs and open ended lugnuts though, if you're using any more than 5mm. You want to make sure your lugs have enough turns...........

thats the thing. i want a 10mm spacer but dont want to replace the studs (mainly because i might get different wheels in the future). so is the 5mm spacer safe with the factory studs?

[CSG Mike]

Originally Posted by loogs

thats the thing. i want a 10mm spacer but dont want to replace the studs (mainly because i might get different wheels in the future). so is the 5mm spacer safe with the factory studs?

I wouldn't recommend any hard driving on it.

What's wrong with replacing the studs? Studs are universal, regardless of the wheel you have. Alternatively, you can cut the studs shorter before replacing, if you want them to be shorter.

*edit* Oops, I've been informed he is on 20mm spacers.

[BlaineWasHere]

Originally Posted by hanabie

5mm spacer all around?

Yes.

Originally Posted by loogs

i was thinking of doing the 5mm spacer for the rear. do you recommend it? safety wise? all i hear is everyone saying how unsafe spacers are. thx

I have 10MM extended studs and open ended lugs. They are safe if you have enough thread engagement on the lugs. See what Mike says below. I've seen some people do 3-5mm spacers on stock studs but I was not willing to try it.

Originally Posted by CSG Mike

Spacers are fine. We recommend getting some extended studs and open ended lugnuts though, if you're using any more than 5mm. You want to make sure your lugs have enough turns.

[Lee358]

Originally Posted by BlaineWasHere

Yes.



I have 10MM extended studs and open ended lugs. They are safe if you have enough thread engagement on the lugs. See what Mike says below. I've seen some people do 3-5mm spacers on stock studs but I was not willing to try it.

where did you buy your studs and spacers from?

[CSG Mike]

Originally Posted by Lee358

where did you buy your studs and spacers from?

We sell them

[loogs]

Originally Posted by CSG Mike

We sell them

i think i already asked you but what spacers/ studs do you sell in 10mm that would be the best. i already have the extended open ended lugs

[BlaineWasHere]

I'm running ARP 10mm extended studs (don't have a part # for FR-S/BRZ but WRX/STi ones are the same) and H&R 5mm spacers. Since Mike helped in the thread you should buy them from him!

[choiboie]

did the 5mm spacers cover the stock studs are do they stick out a lil.
im just curiuos if the rpf1 have enough room on the backside

[gramicci101]

Originally Posted by choiboie

did the 5mm spacers cover the stock studs are do they stick out a lil.
im just curiuos if the rpf1 have enough room on the backside

I think you're confused on the type of spacer. A 5mm spacer will be slip-on, not bolt-on. You don't need to worry about room on the backside of the wheel, because the wheel will be attached to the studs. For bolt-on spacers, 20mm will still stick out a bit and will need a wheel with pockets on the back; 25mm will clear the studs completely.

[choiboie]

Originally Posted by gramicci101

I think you're confused on the type of spacer. A 5mm spacer will be slip-on, not bolt-on. You don't need to worry about room on the backside of the wheel, because the wheel will be attached to the studs. For bolt-on spacers, 20mm will still stick out a bit and will need a wheel with pockets on the back; 25mm will clear the studs completely.

I have rpf1 17x7.5 +48
Would they poke too much with 25mm bolt on?

Sent from my SM-G928V using Tapatalk

[gramicci101]

Originally Posted by choiboie

I have rpf1 17x7.5 +48
Would they poke too much with 25mm bolt on?

Sent from my SM-G928V using Tapatalk

A 17x7.5 +48 with a 25mm spacer will put the wheel's outside edge at about the same spot that a 17x9 +42 does (difference of 0.05mm), so that should give you a reference to see if you like how it looks.

Here's an example, and one of my favorite cars on this forum. He's on 17x9+42 with 255/40 tires, and lowered about 1.2". If your car is lowered, then the wheels should be spaced about the same. If you want the back wheels to be similarly close to the fender, consider 30mm spacers on the back and 25mm spacers on the front.
http://www.ft86club.com/forums/showthread.php?t=13157


Edit: For track usage, unless you actually need spacers to help clear suspension or brake components, I would take them off and run just the wheels. Under extreme stress, the spacers are just another potential point of failure, so if you can eliminate that, you should. They'd probably be fine, but why risk it if you don't have to? For daily driving, they'll be fine. I've been on 20/25mm spacers for two years now with no issues.

[choiboie]

Originally Posted by gramicci101

A 17x7.5 +48 with a 25mm spacer will put the wheel's outside edge at about the same spot that a 17x9 +42 does (difference of 0.05mm), so that should give you a reference to see if you like how it looks.

Here's an example, and one of my favorite cars on this forum. He's on 17x9+42 with 255/40 tires, and lowered about 1.2". If your car is lowered, then the wheels should be spaced about the same. If you want the back wheels to be similarly close to the fender, consider 30mm spacers on the back and 25mm spacers on the front.
http://www.ft86club.com/forums/showthread.php?t=13157


Edit: For track usage, unless you actually need spacers to help clear suspension or brake components, I would take them off and run just the wheels. Under extreme stress, the spacers are just another potential point of failure, so if you can eliminate that, you should. They'd probably be fine, but why risk it if you don't have to? For daily driving, they'll be fine. I've been on 20/25mm spacers for two years now with no issues.

Think I'll order me some 25mm

Sent from my SM-G928V using Tapatalk