I currently own a 2008 RR (non-supercharged) with approximately 175k miles. Similar to Lakeranger, I've had numerous replacements over the years to keep it in good running condition. My experience with owning 4 LR's to date suggests buying new/nearly new and being pro-active on maintenance can allow you to drive them well into 200k miles. However, buying an existing vehicle with 175k would give me pause. At a minimum, I'd want to have access to the service records to see what has, or has not been replaced and maintained. If there are mechanical issues with the Electronic Air Suspension (EAS) you will be into several thousand dollars or repairs. On the other hand, if you get it for the right price, and it's not going to be a primary (daily driver) vehicle, it could be worth the risk. In general, I would be cautious.