Whether I ran the panhard bar setup or the watts link I never had issues with rear end composure over bumps and rough surfaces. And trust me, we have a lot of that to contend with here.
The Z's rear suspension has its own issues with dynamic toe and other things as do many of other cars. IRS does not just magically make a car better... it has to be good.
And if it's good, you've got the benefits of independent rear wheel control (doh), camber adjustment, *typically* better rear tire wear, etc. Ideally a good IRS setup will allow you to maximize contact patch moreso than an SRA, but again, it all depends on setup.
The Mustang is good and does just fine with an SRA. If you don't like the panhard arc you can get a Watts Link (I love mine) but I am definitely not left wanting IRS. My car handles bumps like a champ and hooks up really well. I'm happy with it.
But I definitely welcome the move to IRS. As long as it's a good one it gives us more options.
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- Steve
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