IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

If you are slammed on coilovers look here.

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Old 03-21-13, 01:27 PM
  #16  
Gville350
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^Very true!

Being a current BCR owner that was slammed (<24" up front fender to ground w/ 18s) I can tell you that the spring rate will do little to mess with your ride height issues. I mean, the coilover bodies have sleeves that allow for more than plenty of adjustment (up and down). So you can do away with that as an issue. So now you're only decision is what spring rates will you want for your driving type. I went with 12k/8k, as this was what the a few other brands used as their "luxury" or DD-friendly setup. It is nice and all, but I now wish I had went with 14k/10k for when I really push the envelope. You cannot go wrong with the BCRs...IF INSTALLED CORRECTLY!

You will want camber arms and SPC ball joints up front; couple those with rolled fenders and liner mods and the bumper tab delete.

GL!
Old 03-21-13, 01:37 PM
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My setup is as follows...

bc Coils 12/10 Spring rates

19x9.5+30 225/35/19
19x10.5+30 245/35/19

I feel that if I had to do it again i would have gone with a 14/12 setup. On hard dips on the freeway I still hit the fender liners alot and I have done quite a bit of trimming. I do have to say though in your case I think that more negative camber is going to be your best fix. you can go to 16/14 setup and you will still have a little travel to kiss the lips on your rims to the fender. Also keep in mind the the 12/10 setup is the stiffest you can go without having to have the Shocks revalved.

Negative camber is your friend in this situation. Just make sure your toe is zeroed out and you will not go through tires as much as one would think. I ran -4 camber rear and 2.5 front on my s2000 for years and tire wear was never an issue if that is your concern.
Old 03-21-13, 03:53 PM
  #18  
mikellucci
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I think you saw my taco rear fenders? That was a horrid 10/8 spring rate w/ +22 19x10.5 rear with fenders rolled and pulled! I've since gone with BC at 12/10 and almost wish I chose 14/12 just because our roads have so many big dips

Edit, let me put it this way- if you want to buy my near new 12/10 I'd go and order 14/12. . Lol

Last edited by mikellucci; 03-22-13 at 08:34 AM.
Old 03-22-13, 10:16 AM
  #19  
Vroomin350
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Originally Posted by 509IS350
Im tucking in the rear with 10k rates its ok with no load. But when there's load it will squat like 1/8 -1/4 of an inch. Thats with dampening at 15 from hard, so I think you'll be ok. But for the front I would do at least 12k if not 14k.
I am torn between 12/10 and 14/12. If safe for the coilovers I plan to max the damp settings at stiffest. Perhaps it won't squat much with load, though I have to be in a great mood to allow rear passengers so I shouldn't have a problem Thanks for your help.

Originally Posted by Gville350
^Very true!

Being a current BCR owner that was slammed (<24" up front fender to ground w/ 18s) I can tell you that the spring rate will do little to mess with your ride height issues. I mean, the coilover bodies have sleeves that allow for more than plenty of adjustment (up and down). So you can do away with that as an issue. So now you're only decision is what spring rates will you want for your driving type. I went with 12k/8k, as this was what the a few other brands used as their "luxury" or DD-friendly setup. It is nice and all, but I now wish I had went with 14k/10k for when I really push the envelope. You cannot go wrong with the BCRs...IF INSTALLED CORRECTLY!

You will want camber arms and SPC ball joints up front; couple those with rolled fenders and liner mods and the bumper tab delete.

GL!
Originally Posted by APdeuce
My setup is as follows...

bc Coils 12/10 Spring rates

19x9.5+30 225/35/19
19x10.5+30 245/35/19

I feel that if I had to do it again i would have gone with a 14/12 setup. On hard dips on the freeway I still hit the fender liners alot and I have done quite a bit of trimming. I do have to say though in your case I think that more negative camber is going to be your best fix. you can go to 16/14 setup and you will still have a little travel to kiss the lips on your rims to the fender. Also keep in mind the the 12/10 setup is the stiffest you can go without having to have the Shocks revalved.

Negative camber is your friend in this situation. Just make sure your toe is zeroed out and you will not go through tires as much as one would think. I ran -4 camber rear and 2.5 front on my s2000 for years and tire wear was never an issue if that is your concern.

Great advice and much appreciated. That was my concern, regretting my purchase after they are installed. Looks like I might end up installing the camber arms after all.

Originally Posted by mikellucci
I think you saw my taco rear fenders? That was a horrid 10/8 spring rate w/ +22 19x10.5 rear with fenders rolled and pulled! I've since gone with BC at 12/10 and almost wish I chose 14/12 just because our roads have so many big dips

Edit, let me put it this way- if you want to buy my near new 12/10 I'd go and order 14/12. . Lol

Mike you got me thinking now. I simply just hate the fact that 14/12 has a 3 week wait because like APdeuce said anything past 12/10 they need to revalve them.
Old 03-22-13, 10:57 AM
  #20  
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Originally Posted by Vroomin350
I am torn between 12/10 and 14/12. If safe for the coilovers I plan to max the damp settings at stiffest. Perhaps it won't squat much with load, though I have to be in a great mood to allow rear passengers so I shouldn't have a problem Thanks for your help.






Great advice and much appreciated. That was my concern, regretting my purchase after they are installed. Looks like I might end up installing the camber arms after all.




Mike you got me thinking now. I simply just hate the fact that 14/12 has a 3 week wait because like APdeuce said anything past 12/10 they need to revalve them.
I recently orderd BCR's 14k/10k from circuitmotorsports and it was delivered a little after a week, so it didnt take them the 2-3 weeks quoted. the box had 14k/10k written on it, so i guess it was done that fast. I have already installed and settings are 12 clicks from stiffest front and 9 clicks rear. to me it rides about the same as my Megan EZ's just doesnt compress as much, i didnt want to set damper to max setting, since i think it wears them out faster?
Old 03-22-13, 12:44 PM
  #21  
projectdna
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Originally Posted by Deathrow23
I recently orderd BCR's 14k/10k from circuitmotorsports and it was delivered a little after a week, so it didnt take them the 2-3 weeks quoted. the box had 14k/10k written on it, so i guess it was done that fast. I have already installed and settings are 12 clicks from stiffest front and 9 clicks rear. to me it rides about the same as my Megan EZ's just doesnt compress as much, i didnt want to set damper to max setting, since i think it wears them out faster?
for non-track purposes (i.e. daily driving with the occasional spirited run), it won't make a difference.
Old 03-22-13, 01:09 PM
  #22  
Vroomin350
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Originally Posted by Deathrow23
I recently orderd BCR's 14k/10k from circuitmotorsports and it was delivered a little after a week, so it didnt take them the 2-3 weeks quoted. the box had 14k/10k written on it, so i guess it was done that fast. I have already installed and settings are 12 clicks from stiffest front and 9 clicks rear. to me it rides about the same as my Megan EZ's just doesnt compress as much, i didnt want to set damper to max setting, since i think it wears them out faster?
I am going through BC racing directly and they told me they don't have any revalving cartriges in stock. They have to wait on them.

Originally Posted by projectdna
for non-track purposes (i.e. daily driving with the occasional spirited run), it won't make a difference.

Thanks again this is something I wanted to know.
Old 03-22-13, 02:02 PM
  #23  
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Originally Posted by Vroomin350
I am going through BC racing directly and they told me they don't have any revalving cartriges in stock. They have to wait on them.
Maybe Circuitmotorsports can answer this? i was suprised that it was shipped out that fast then what was quoted or maybe i got mine in before the cartriges went out of stock. i ordered on 03/12, the coilovers were shipped on 03/14 from Longwood and arrived in Tampa/st pete on 03/15. Circuit said they put the order through BC directly.

Last edited by Deathrow23; 03-22-13 at 02:13 PM.
Old 03-22-13, 07:57 PM
  #24  
509IS350
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