RC-F on 20" Rennen Forged
02-09-15, 10:09 AM
#31
Driver
Thread Starter
Would you happen to know the spring rates you are using? So typically someone could just get the 14' Coilovers and custom spring rates to accommodate the added weight of the RCF compared to the IS350 
I would be concerned with not having a camber plate for the fronts, and I wonder what camber arms would fit for our rears?
I would be concerned with not having a camber plate for the fronts, and I wonder what camber arms would fit for our rears?SPC makes arms for the rear:
PN 74520
http://www.spcalignment.com/index.ph...c&task=details
http://www.maperformance.com/lexus-i...spc-72450.html
02-10-15, 09:43 AM
#33
Not sure why would I run smaller tires up front?
Also, suspension is not 100% identical, meaning I don't think you could use IS350 lowering springs and I know first hand the GS springs that the RC350 guys use do not work (in the front anyway) .... This has to do with the spring perch on the front strut. However, in the instance of coil overs, they do fit meaning they bolt up properly and since the BC racing are full adjustable for height and dampening, they can be dialed in to work on the RC-F no problem.
Also, suspension is not 100% identical, meaning I don't think you could use IS350 lowering springs and I know first hand the GS springs that the RC350 guys use do not work (in the front anyway) .... This has to do with the spring perch on the front strut. However, in the instance of coil overs, they do fit meaning they bolt up properly and since the BC racing are full adjustable for height and dampening, they can be dialed in to work on the RC-F no problem.
02-10-15, 12:02 PM
#34
Driver
Thread Starter
Ok got you suspension it was explained like this in the first post or maybe i just read it wrong anyway for the tires your are running 265 on a 9.5 up front i'm sure you could run a 255 or 245 and that's not stretched for rubbing purpose I ran 215 and 225 on 9.5 thats stretched.
If you only go down an inch and your tire setup is not aggressive then maybe not ... you go down 1.5 inches and you will need to trim unless you are running stock wheels / offsets.
I've always taken the approach of get the look/setup that I want and resolve any issues that pop up in doing so. I don't let things like shaving fenders or trimming liners stop me but I understand 100% that there are a lot of folks that do not want to deal with those obstacles. Especially on a brand new car.
02-11-15, 10:25 AM
#35
Lexus Test Driver
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Hey Retro
Great job! These wheels look amazing on your RC. I personally would raise near half an inch for that clean look but it's superb nonetheless.
You ever think of change the color of the wheel to gunmetal color for a contrast with white exterior?
Great job! These wheels look amazing on your RC. I personally would raise near half an inch for that clean look but it's superb nonetheless.
You ever think of change the color of the wheel to gunmetal color for a contrast with white exterior?
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