What PSI to run

[devilmaycare]

From MOPAR instruction sheet: "8.0 Nm (71 in lbs). Over-torque of the sensor nut to only 12 Nm (106 in lbs) may result in sensor separation from the valve stem."

[esgyrndafydd]

Originally Posted by Just

I had 2 sets of Pirelli 225/60 18s, factory fit ones lasted about 21,000 miles, they were inflated to recommended 36 psi (bar is where you buy beer? :-)) Fronts rubbed off really badly on outside edges, so second set of Pirellis were set to 40 psi front , 38 psi rear, they were also rotated front to rear after 15k miles and lasted about 34,000 miles.

I now have 255/55 18s and run front at 40psi and rear at 38. Fitted at 55,000 miles, rotated at 70,000 and now on 91,000 and still a few mm of tread left, so may well be 40,000 plus on these by replacement time. Wear has been totally even on these.

I tend to run slightly higher pressures and find it works well.

When you rotated how did the pressure sensors cope? I assume they still reported the original positions?

[devilmaycare]

TPM locations are automatically determined by the 3 wheel arch sensors.

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[esgyrndafydd]

Originally Posted by devilmaycare

TPM locations are automatically determined by the 3 wheel arch sensors.

Sent from my HTC Wildfire using AutoGuide.Com Free App

So are you saying that if the wheels are rotated the sensors will pick up the correct wheel?

If so, how long does it take for them to do it? Last time I had a set of tyres I had to get them to fit them in the same position that the wheels had come off so they corresponded with the TPS. If they eventually work it out for themselves then I need not have bothered...

[badgx]

Originally Posted by devilmaycare

From MOPAR instruction sheet: "8.0 Nm (71 in lbs). Over-torque of the sensor nut to only 12 Nm (106 in lbs) may result in sensor separation from the valve stem."

Thanks

[devilmaycare]

Originally Posted by esgyrndafydd

So are you saying that if the wheels are rotated the sensors will pick up the correct wheel?

If so, how long does it take for them to do it? Last time I had a set of tyres I had to get them to fit them in the same position that the wheels had come off so they corresponded with the TPS. If they eventually work it out for themselves then I need not have bothered...

Yes. A couple of miles, or maybe less, should re-calibrate. Otherwise routine wheel rotation would prove a bit of a nightmare.

[UK CHRYSLER 300C]

2.5 bar or 36 psi