Shumdit said:
I can not see how the negative camber is not the factor in excessive tire wear that lowered NSX's have. If your settings truly were the answer, why does everyone here eat tires left and right with lowered suspensions?
Check the toe settings, all of them run 2 to 3 times as much toe. Stock toe settings eat up tires. That is why Honda gave away so many tires for the folks who bought the first NSXs, then they changed the spec to get acceptable wear.
I run 2 degrees negative in the front with 0.1 degree toe out as well. The fronts do get some wear on the inside, but my rears are pretty damn flat. If you run as little toe as I do, there is a price in the way the car feels when driving over regular roads, most folks are not willing to make the trade off of 'hands free tracking'. I like almost no toe, both front and rear, the car feels great under threshold braking on the track and I don't mind that it wanders a bit on the interstate.
More toe sets up tension in the sidewalls of the tires which makes the car start to turn quicker, and the tension between the tires make the car track straighter. The price you pay for this is wear, the tires are scrubbing as you drive, and wearing out. If the inside edge(negative camber) is making contact with more force, it will be the side which wears out first. The less toe there is, the less the tires scrub and wear. I have gotten 50% more tire life by reducing the toe settings.
I think it is great someone is offering a camber kit, tires will wear less quickly if the camber is close to 0 degrees. My point is that toe is the component of the alignment which causes wear, camber just makes it so it shows up on the inside of the tire first. All of you would increase your tire life if you reduced the amount of toe, no matter what you do with the camber. Personally, I am working on a camber kit which will increase the negative camber for track use, but you don't have to make a permanent change to the suspension arms, like the Comptech offset bushings. These will have mono-ball pivots to reduce deflection, plus be sealed to keep grease around the bearings. The fronts should be reversible, so they could be a nice compliment with the ones Thom is working on for the rear...