Originally Posted by Sean Cochran
I would say the line is usually caused by the insert in the tire. Thin inserts let the tire move more and will cause the wear pattern you are describing.
That's true. The tire "rolls" over the insert. The CS tires are the worst in that problem. The insert is just a little bit to small. You should check the tire's after each run if there still correctly glueed on the rimm. This will provide a lot to. You will not be able to get rid if the line with changing your camber, so just put that back at 1.5 or 2 degrees.
Rolling over the tires has also a bit to do with the set-up. For example an Xray doesn't wear its tire's as hard as an Tamiya because of the building of the car. Also the set-up does a lot. If the car is slightly understeerd the front tires wear much harder then when the car is slightly oversteerd.
Why is it always the inside. Simpel, when you steer to the left. the right front tire (off throttle) has the moste pressure on it. end the car is pushing real hard on the tire. The tire is slightly rolling over his rim . The left front tire has less pressure and doesn't roll that much (let's say not).
Here in holland most of our tracks ar counterclock wise. So we do wear a lot or front right tires... for example i'm training at 4 Left Rear tires :P these are still good.... Dont forget, check the glue of the tires!