Just had my C8 aligned. My thanks to Scott Murfin at CanAlignment who did a great job!
I went with GM track specs, but with less aggressive camber, front toe to zero, without relocating the washers. Having done many cars before, I wanted a street/track compromise that wouldn't result in excessive wear of the inside edges on the street, yet not kill the outside edges of my tires in a single track day. From previous experience with other cars I was looking at -1.0 to -1.5 on the front, -0.9 to -1.3 on the rear. From talking with Scott (who runs a C4 and has a lot of experience setting up cars) we decided to go with -1.3 F, -1.1 R because I'd be occasionally running at tighter tracks. For comparison this is still quite a "streetable" setting as many cars like Porsche GT3s and Skyline GT-Rs run -1.5 or over from the factory.
Results were immediately noticeable. The stock alignment I found results in understeer on entry with a sudden snap to oversteer as you set the car and transfer the weight getting on the power. This is now gone. It's also a lot harder to engage the TC on corner exits. A lot more planted and predictable overall. Tracks well on the highway without any "seeking" due to road crown/camber. So far very happy with the results. For long term tire wear I'll see, and possibly have the camber adjusted again accordingly if I find my driving habits are wearing either the inside or outside edges of the tires excessively.
I'd highly recommend adding a bit of camber to the C8 even if it's a street use only car. Be careful about certain alignment shops, many don't understand that the C8 needs the rear hub angle set to zero (some call this rear caster), as this is not adjustable on most cars.
I went with GM track specs, but with less aggressive camber, front toe to zero, without relocating the washers. Having done many cars before, I wanted a street/track compromise that wouldn't result in excessive wear of the inside edges on the street, yet not kill the outside edges of my tires in a single track day. From previous experience with other cars I was looking at -1.0 to -1.5 on the front, -0.9 to -1.3 on the rear. From talking with Scott (who runs a C4 and has a lot of experience setting up cars) we decided to go with -1.3 F, -1.1 R because I'd be occasionally running at tighter tracks. For comparison this is still quite a "streetable" setting as many cars like Porsche GT3s and Skyline GT-Rs run -1.5 or over from the factory.
Results were immediately noticeable. The stock alignment I found results in understeer on entry with a sudden snap to oversteer as you set the car and transfer the weight getting on the power. This is now gone. It's also a lot harder to engage the TC on corner exits. A lot more planted and predictable overall. Tracks well on the highway without any "seeking" due to road crown/camber. So far very happy with the results. For long term tire wear I'll see, and possibly have the camber adjusted again accordingly if I find my driving habits are wearing either the inside or outside edges of the tires excessively.
I'd highly recommend adding a bit of camber to the C8 even if it's a street use only car. Be careful about certain alignment shops, many don't understand that the C8 needs the rear hub angle set to zero (some call this rear caster), as this is not adjustable on most cars.
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