Need help -- get Nitto Invo tire, or Michelin PS2 at twice the cost?

[DenverSteve]

I haven't had to replace the rubber on mine yet. Why would the rear tires wear at a rate 2:1 faster than the front? According to one poster and not previously challenged or questioned. Very curious.

[thstone]

The rears typically wear faster than the fronts since they are doing all of the work in moving the car (propulsion) and Porsche drivers tend to be a little (hah!) lead-footed. And the majority of typical driving is mostly in a straight line so the fronts are just along for the ride and not really doing much work.

Fronts will typically wear at the same rate as the rears if you are doing a lot of canyon carving or other driving where you're spending a lot of time cranking it in the corners. In this case, the understeer built into the car will cause the fronts to scrub and wear at a rate similar to the rears.

If you track at lot, you are cornering hard on a fairly continual basis so you may find the the fronts wear even faster than the rears, especially if you haven't adjusted your tire pressures correctly and/or increased negative camber to minimize understeer and even out the wear across the tire (inside to outside).

[DenverSteve]

Thanks for that. I spend half my time in the city and half in the mountains - so I guess I'll see what comes of my situation. Unfortunately the "wider in the rear" set up eliminates the ability to rotate all the way around.