22mm ITR bar or 23mm?

ASSISTANCE Suspension, Brakes & Wheels
1

I can’t decide.

At the end of the day the price difference is negligible, it seems like as long as I don’t need OEM bushings, they won’t be hard to come by but I don’t want to go overboard. But then again there is only a 20% increase in stiffness so I wonder if it really matters?

What do you guys think? The USDM ITR had 24mm/22mm sway bars and the later JDM had 25mm/23mm. I’ll have close to 24mm in the front, but then again, this certainly isn’t an ITR.

Here is the rest of what I have/have planned:
Decent tie bars to increase chassis rigidity.
Hard rubber or poly bushings (except in a few places)
350F/250R coilovers (not a DD, but also not a dedicated track car)
ST front sway bar (~1mm bigger than stock)

2

How often will you carry back seat passengers? Stiffer rear swaybar transfers more movement to the car for DD use.

3

True. Although I probably won’t ever have back seat passengers, so that shouldn’t matter too much. I was hoping someone could chime in with experience with both bars, or who could confirm that the 23mm made the car tend to oversteer, but I guess that has a large part to do with the rear spring rates too, right?

I guess my issue is that I suspect the 22mm is more appropriate for the setup, but know the 23mm won’t be available in the future. I can probably find something better to do with that $40 though.