I would do a compression test before buying, but doesn't seem like a bad deal.
Just know what your getting with a high mileage vehicle. Expect it to need things.
FYI, he should not expect to recoup the $500 for the tires, if it checks out OK and you like it, offer like $1500 and maybe pay $1600 max.
Just got a quote from Pep Boys for the power steering pump and it's only like $300 so if it needs that, that's not too bad...
No way. No way it is worth more than 1k. That many miles, he is kidding himself. Not saying don't buy it, but a 4runner of that age with MUCH lower miles can be had from around that price.
7 years ago, I bought a 90 with 120k on it for 2500. You don't get to recoup tire cost. Consider it the cost of owning a car. What good are the tires if the engine blows tomorrow.
Offer 1k, honestly.