motorstereo

Thank you for the advice, as soon as I defrost a bit I will check the circumference (it's getting a bit chilly here in Milwaukee, it's in the 20's and I don't have a space heater in the garage!) The tires all look to be in decent shape , as far as the treads go. They are all the same type. I checked the inflation of all 4 tires: Fronts: LF= 28 and RF 28.5 psi ; Rears: LR= 29.5 and RR= 29. So a bit off, actually, a variation of 1.5 psi. Again, thanks for the advice on checking the tires and the info about the differential oil. I am a shadetree mechanic at best and this is helpful information to have. -John

It's a 5 speed manual, with approx 72,000 miles. I will check on the tires as soon as my 1yr old goes down for his nap! Thanks- John --------- Is this a manual trans or auto trans vehicle? How many miles? Are all your tires the same brand, nominal size, treadwear, and proper air pressure? (they must all match within 1/4" circumference when measured with a tape measure otherwise AWD issues can occur).

I have an intermittent problem with my 2002 Outback wagon. Occasionally, while driving at highway speed (with cruise control on), the rear wheels "judder" vigorously (violently?)-- I feel like I am driving on the rumble strip on the side of the interstate. There is no pulling , the vehicle tracks perfectly straight. Upon pulling over to the side of the highway and shutting off the car, and starting out again, the symptom remained. So, pulled over again and shut car off, then restarted engine, the problem went away. The previous owner (my father in law) had the same problem 4 years ago, and the dealership replaced the differential. I realize that intermitent problems are by their nature hard to diagnose, but any advice would be greatly appreciated. Thanks- John