[Dr. Isotope]

If you're never going to Auto-X or race your car, anything more than the TRD kit is an expensive luxury. while the TRD is not as "pure performance" as any of the adjustable coilover kits, ask yourself: do I really need it to be?

If you're just looking for a spirited daily drier, the TRD will suit you well. Hell, even the stock setup is severly limited by the quality of the OEM rubber. Replacing the tires should be suspension concern #1.

I speak from some experience-- I had a bit more tied up in my last suspension than I do in the current one...

 

[Dr. Isotope]

The tC rides on the TRD setup: struts, springs, and rear sway. Set it and forget it.

The car pictured was my Sol (may she RIP), with Tein SuperStreets, 7kg/mm front, 4kg/mm rear, ST 19mm rear bar, SRP front and rear camber kits; front set to 1/8" total toe out, rear to at 0º, front camber -2.5º, rear camber -1.5º. rear camber arms were shortened and pivot points moved outward to quicken camber gain. On the chassis scale (wiht me in the driver's seat of course), she had perfect 50/50 crossweight, and 54.4F/45.6 weight distribution.

It was a superb handling car. But for what you get, you also have to give. Any weight changes over a percent (anything approaching 25lbs) would force me to rescale and rebalance the car. New exhaust? Rebalance. Different subs and enclosure? Rebalance. Fortunately, I enjoyed it. It's just not what I was looking for when I bought the tC. heck, the first thing I bought aftermarket for the tC was a DVD head unit. I think of the tC in completely different terms.

The Sol had no A/C, no cruise, underdriven P/S, 250lbs of weight reduction-- it was my go-kart, and the Tein SS complemented that perfectly. Throw the damping into double digits and go three-wheeling. So I know one extreme from the next-- and chose to aim the tC at a happy middle ground.

 

[Dr. Isotope]

If you want adjustability, you need to get camber kits for the rear, like the Hotchkis units. The front uses struts, so the camber may be adjusted via plates, but the rears are shocks, and therefore do not affect the camber of the rear tires.