Weight, Tires (Correct marking on the outside of the tire like MED or H12 ect, common to see a CI tube. other than that pretty much visual, correct wing(dished or flat with a wickerbill) Flat only for 410s, correct muffler, teathers if required.
if you go to knoxville they have a pretty extensive pre race tech compared to most local series, they check chassis thickness in multiple spots, thickness of the bumpers, overall they give a once over and point out anything that might be a safety concern. WoO does tube thickness checks also.
I have heard of series taking spark boxes to have them tested but I cant confirm that statement.
Knoxville tests tires for doping.
I am not what else is being done but I am sure someone else will fill in the gaps.
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