It would have made more sense to put your good tyres on the steering and the half worn ones on the rear. I'm surprised the dealer didn't do this as a matter of course, as that is where you need the best tread and tyres in best condition in terms of life, where you are less likely to have an age-related failure. It should reduce your wind-up issues too, as the transmission power distribution favours the front axle.
39 psi was pretty high for an unloaded rear end and it must have ridden hard. But 32 psi is a bit light for the load carrying rear end anyway (esp if you carry passengers and/or a load in the boot) and potentially increasing drag and tyre wear on your nice new tyres. If you bring your rear pressures down to match the 32 on the front front and hence run 32 all round it is too soft in my view, especially at speed and will adversely affect handling. The word barge comes to mind.
Further, while you are using tyre pressure variation to influence rolling diameter, it also affects understeer and oversteer tendencies
One problem is potentially begetting a few more that you don't need.
Swap the tyres around and stick the good ones on the front and run them all at 38 psi and you can dispense with all this messing about.
Last edited by Doug_MPS6; 06-12-2012 at 01:52 PM.
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