sugarwood

No, I meant why the shock tower brace is useless.

sugarwood

Do some searching, and you'll see examples where the "surface" rust was way deep inside the rockers.
Unless you know what you're doing, I'd be careful without verifying the extent of rust damage.
Rust visible is sometimes the tip of the iceberg. Cars rust from the inside out.

Starbuckslova1

handling wise it doesn't really make a difference for cornering. I have one on my car- makes my suspension squeak but looks cool, i like it it but not super useful

911Dave

I mean that it's useless on a street car and also on your average DE car, especially in a coupe. I tracked 911s for several years, in the fastest PCA run group, both with and without the strut brace and never could tell a difference in the car's feel or grip during cornering.

But what really settled the argument for me was this recent thread: https://rennlist.com/forums/911-foru...and-after.html

The thread starter claims it can increase torsional rigidity by 10%, which might actually help a targa or cabriolet, but still the difference IMO would be hardly noticeable on the street, even if driven aggressively. The effect on camber is negligible.

A properly built triangulated brace is probably advantageous on a race car though.

Mark Salvetti

I have a Stable Energies triangulated brace in my Targa. I thought it made a difference even on the street in how the steering and front end felt over bumps and taking corners, but it might have all been in my head. Which in and of itself probably made it worthwhile.

Mark