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Aluminium bolt to hub spacers


ClioSport Club Member
  05' BG 182FF
Just wondering how safe they are really?
i know a lot of people have the ones from dan at M.a.d (me included) but the thought that the wheel is bolted to aluminium whilst that's bolted to the hub?

anyone had any issues?
  172 Track Car
I will only use spacers with a chamfered bolt for bolting to hub and steel inserts for bolting the wheel to. Threads are massive stress raisers as are counter bored cap heads. I know in the scheme of things they are massively over engineered but I'm paranoid and believe in good engineering principles.