Tires OEM BMW or OEM Subaru

HD thrust arms are an improvement without too much sacrifice. Better shocks as well. I’ve found tires make a huge difference with the E39.

Narrow, low-profile tires aren't as forgiving over potholes, especially when riding on the 20" wheels.

Nope, you don't need to change all four. I had a similar problem on my Subaru Legacy years ago, and I simply bought one new tire and then took it to a local race shop and had them shave the new tire to the same depths of the old one.

+1 used those on my e90 BMW last year during the 'record' snowfall and the were great.

It's an '09 2.5 Special Edition auto. Likes: Fairly \"sporty\" feeling. Lots of features for what it's costing me. decent stereo. Cons: weak engine. drivers seat doesn't go back far enough. armrest is awful. fuel economy sucks for a car this size. crappy stock tires.