SC430 - 2nd Gen (2001-2010)

The official SC430 wheel style threads (56k warning)

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Old 07-27-06, 09:21 AM
  #106  
rominl
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with 10, i suggest 275. with 10.5, i suggest 285. with 11, i suggest 285 or probably 295

i thought with the sc430 the car oversteer more easily? duno, at least that's how i feel about the car over my gs400 (probably coz' of the heavy "butt")?
Old 07-27-06, 10:25 AM
  #107  
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Originally Posted by DPRSupra
you're right Tony
How much does that full bumper replacement run?
Old 07-27-06, 12:04 PM
  #108  
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Originally Posted by rominl
with 10, i suggest 275. with 10.5, i suggest 285. with 11, i suggest 285 or probably 295

i thought with the sc430 the car oversteer more easily? duno, at least that's how i feel about the car over my gs400 (probably coz' of the heavy "butt")?
Most rear drive cars should be more inclined to oversteer....

Could've been tire condition, but the day I put the sways on the car, I went ***** out onto an 270 degree onramp and the front tires washed out on me. Quite startling, but just taped the brakes and brought it back into line... No guardrail would've let me do a little off-roading.

But I was wondering about the 40mm diference in tire width. Obviously the SC is set up for same width tires. On the supra stock is 235/255 (20mm differential) and when we go bigger, we usually go for 30mm. (i.e., 245/275, 265/295, 285/315) Not likely to ever be noticable, but if one were actually a good driver, you might notice the difference.

All that being said, if one knew what they were doing, you could compensate accordingly with shock, spring and swaybar settings...

But really, how wide can you go without rubbing and still keep some cushion is really the question for 99.9% of SC owners here.

Last edited by rsa supra; 07-27-06 at 12:09 PM.
Old 07-27-06, 12:11 PM
  #109  
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Originally Posted by rsa supra
So with 10's and 11's aren't 245's going to be stretched?
I run a 11 inch rear with 295s as Henry suggests. 245s will be way too small.

Originally Posted by rsa supra
Thanks. I've read your guide, just wasn't sure about the ride height. Don't want any rubbing for Mom.
Ryan, you've seen my car. I'd say a half inch higher all around an no rubbing for mom. I have no rubbing on my car but I had to make certain "sacrifices" to achieve that.

Originally Posted by rsa supra
And what about handling? The car already understeered with the sway bars set at middle stiff. I put the rear on full stiff but haven't pushed it since...
Originally Posted by rominl
i thought with the sc430 the car oversteer more easily? duno, at least that's how i feel about the car over my gs400 (probably coz' of the heavy "butt")?
I totally agree with understeer. Even with the rear sways set up like Ryan's, I still don't like the push. I've been thinking it's time to change from the CS to something else, a 3.76 rear, or even some chassis stiffening. Even better all three. Any suggestions out there?
Old 07-27-06, 11:07 PM
  #110  
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Originally Posted by rsa supra
Most rear drive cars should be more inclined to oversteer....

Could've been tire condition, but the day I put the sways on the car, I went ***** out onto an 270 degree onramp and the front tires washed out on me. Quite startling, but just taped the brakes and brought it back into line... No guardrail would've let me do a little off-roading.

But I was wondering about the 40mm diference in tire width. Obviously the SC is set up for same width tires. On the supra stock is 235/255 (20mm differential) and when we go bigger, we usually go for 30mm. (i.e., 245/275, 265/295, 285/315) Not likely to ever be noticable, but if one were actually a good driver, you might notice the difference.

All that being said, if one knew what they were doing, you could compensate accordingly with shock, spring and swaybar settings...

But really, how wide can you go without rubbing and still keep some cushion is really the question for 99.9% of SC owners here.
actually, good point..... i just remember what happened the other weekend. i was on the sc430 on 270 degree freeway change. i entered it very fast but when i turned, the car didn't turn fast enough and i had to brake (dangerous) and brought it back... so yeah that's understeer. not sure if it's tires coz' those are nothing compared to my michelin. i am already at max with my sways

about tires, you are fine. i have 245 and 285 on my gs, and my friend has 255 and 295. there is no problem at all.
Old 07-31-06, 08:23 AM
  #111  
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I wonder how much tire you can get under the front w/o rubbing?

A 255/285 or 265/295 set up would be pretty nuts. More than enough to keep a Supra planted. Even if the SC is a little more of a pig.

Maybe I'll see if my new Supra wheels will bolt up. Just need a little spacer.
Old 07-31-06, 09:02 AM
  #112  
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Originally Posted by rsa supra
I wonder how much tire you can get under the front w/o rubbing?

A 255/285 or 265/295 set up would be pretty nuts. More than enough to keep a Supra planted. Even if the SC is a little more of a pig.

Maybe I'll see if my new Supra wheels will bolt up. Just need a little spacer.
well i have 255 in the front and i have no problem at all.
Old 11-10-06, 04:03 PM
  #113  
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unbelievable .............rominl you are the best!!!!!
Old 11-12-06, 11:21 AM
  #114  
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Originally Posted by rominl
actually, good point..... i just remember what happened the other weekend. i was on the sc430 on 270 degree freeway change. i entered it very fast but when i turned, the car didn't turn fast enough and i had to brake (dangerous) and brought it back... so yeah that's understeer. not sure if it's tires coz' those are nothing compared to my michelin. i am already at max with my sways

about tires, you are fine. i have 245 and 285 on my gs, and my friend has 255 and 295. there is no problem at all.
what's weird is that before putting on the tein cst, my car with 245/35/19; 275/35/19 and daizen sways (stock susp), the car had great turn in but was slightly prone to oversteer. now with the cst and and dump, oversteer and my back suspension has a tendency to compress. anyone have this problem? could stiffer springs on the cs help?
Old 11-13-06, 01:03 AM
  #115  
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Originally Posted by betection
unbelievable .............rominl you are the best!!!!!
thanks man, just trying to do what i can to help

etzel, can you elaborate more? are you running the stiffest settings in the back already?
Old 11-15-06, 01:17 PM
  #116  
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major typo: now it has understeer (not oversteer). and yes, my settings are for the rears to be stiffer than the fronts, i.e., 1/0; 5/4; 10/9.

in fact, i'm very happy about the ride comfort with cst but i'm not satisfied with the handling dynamics. is the dump or the spring rates?
Old 11-15-06, 11:28 PM
  #117  
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ah gotcha. so you put the sways to most aggressive settings in the rear already? count from stiffest settings, maybe you can try 8 front and 6/5 rear, maybe that will help a bit more?
Old 11-24-06, 12:07 AM
  #118  
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did some experimenting and you know having the front dampers 4-5 clicks softer than the rears makes a huge difference. the car feels more balanced (contrary to what we'd think). maybe that's why lexus swapped out the rear shocks and springs in 05 to make them stiffer.
Old 11-29-06, 02:20 AM
  #119  
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Originally Posted by etzel
did some experimenting and you know having the front dampers 4-5 clicks softer than the rears makes a huge difference. the car feels more balanced (contrary to what we'd think). maybe that's why lexus swapped out the rear shocks and springs in 05 to make them stiffer.
umm very interesting to have the rear stiffer than the front. i should give it a try some day and see how it feels like.

good info!
Old 04-29-07, 01:41 PM
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this one is
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