I take my Outback on rough roads, with lots of large sharp rocks. I have a differential protector plate. However, my real concern is that the tires are not quite tough enough for this use -- I'm especially worried about side damage, and wonder if one can get tougher tires for this car -- recognizing that the limited wheel-well space also limits choices.
The car comes with P225/60R16 Bridgestone Potenzas. The right tire loses pressure much more quickly than the others; I don't see obvious dings on the rim, but there are some cm^2 areas where the black surface rubber (of the sidewalls) has been abraded down to the brownish material underneath.
Are there any options for "tougher" (particularly sidewall) tires for this car? I'd also like snow-rated tires, since I do travel on roads that are occasionally snow-covered in winter (I live in Las Vegas, NV).
Thanks.