New member considering a Z
I've only driven a touring to date. It was very noisy in the rear but I suspect it was cheap Chinese tires. How much difference am I likely to notice when I drive a sport? I plan to drive one tomorrow and may buy if I like it. It's a 2013 with 22,000 miles and NAV. I definitely need the sport because the LSD is mandatory. In connection with that, my differential guy says you can improve the viscous LSD by running straight 140w fluid.
Any input would be appreciated.
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