I bought these from Amazon for $29 dollars more than Centric 120-series from RockAuto. Wondering what the analysis is on these. Says they're "manufactured under QS-9000 and ISO 9001 certifications" and "the run-out tolerance is only 0.0025", about half the industry norm".
Are they worth the added cost? Or paying for a name?
Are they worth the added cost? Or paying for a name?

