Newby - Which old BMW should I buy?

@ TemporySanity your 540 is pretty clean bro. I'm loving those wheels. I've had mine for a couple of weeks. Pretty good condition. Just some minor things i gotta take care of.

540i. I've owned both and the 540i actually makes you Wana drive more. 525i gets a lot better fuel economy.

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It dpends,if you're a performance guy go with the 540 (there are more options available). Personally I would go for the 540 because of the mileage unless the owner of the 525 has had the engine/trans rebuilt. The insurance would be cheaper on the older model with smaller engine also. They are great cars but around 300,000 miles things start to wear out no matter how well built they are.