Quote:
Originally Posted by alexwhittemore
Maybe that's what you mean, that you think a 4WD system (with a proper transfer case and two LSDs, a la Jeep Wrangler) is more ideal - in some situations for sure, but I'd happily make the argument that it makes no sense in a BMW, or really any car that you don't plan to do rock and hill climbs in. xdrive accomplishes all the engineering goals BMW set out for with few compromises, where a true 4WD system ticks off very few of them.
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Audi and Subaru as well as Mitsubishi use proper transfer case and 2 LSDs for STI, 1 LSD for S4, and Evo uses 1 or 2 LSD as well (note that those are not Jeep Wrangles, those are high performance cars)
Xdrive doesnt have any of that because of the cost and ONLY the cost. It was made for people to drive more easily through snow and it does it well....nothing more (just like Volvo or VW). Both Xdrive and Haldex use electronic clutch packs and open front and rear diffs, thats why I said they are similar and electronic.