I've only had to replace the tie rods once somewhere between 60-70k miles. Your friend probably had the stock goodyear tires on his truck. They didn't wear down from poor suspension geometry, it's because they are terrible tires. It's widely known that the stock goodyears wear out quickly, unevenly, and noisily(?). At 43k miles, you'd probably be looking at putting new brakes on it (if warped or worn of course), maybe a new tstat soon if you get a CEL. Depending on how hard it's been driven, you shouldn't have to worry about bushings and tie rods till 60-70k miles.
To continue on with the maintenance costs thread, can you tell me what kind of expense is involved with replaceing brakes on a LR3?
Thanks