Happy to be corrected on my observations, but my B64d front axle width is over 250mm regardless of the hex width used. I tried the 5mm hex with a 4wd wheel and the widest point is still the axle nut wheel threads. It's almost 260mm. Reading BRCA 2017 rules max width for 2wd & 4wd is 250mm. If the BRCA box is only 250mm wide my car isn't gonna fit!
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