Not Ranked
I agree with Richard, use grade 8 if you can. Before I went to road america a month ago, I checked about every nut and chassis bolt on my hi-tech cobra. Almost all are grade 8 on the hi-tech. In checking the cobra over last night, there are a few bolts and or nuts that are no longer tight, that I know I checked last month. So, the moral of the story is to check all of your brake/chassis/steering/suspension components often weather you drive on the street or track, they can loosen. None of us are driving a factory assembled vehicle. Scott
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