BMW Problems

Yes, it is important to change the coolant, particularly with a BMW with its alloy head. When you do it it’s vital you use the correct coolant as specified in the owner’s manual. Older BMWs, particularly the 3-Series, can be troublesome with high mileage. There are a number of plastic fittings used in the cooling system, including the radiator, and they are known trouble spots. The power steering can also give trouble, the suspension bushes often need replacing, and there are many others. Only buy one if it’s a low mileage car with a known history and a full service record, and only if you’ve got deep pockets.

The problem with the N47 diesel engine dates back to 2007. There are plenty of overseas reports of the timing chain failing, as yours has done. Deal directly with BMW head office and seek some support for the cost of repairs. It is a problem, and BMW should bear some responsibility for it. If you can’t get any help, go to the ACCC and make your complaint to them.

The idea of buying an older BMW can be attractive, but it needs to be done with caution. A 10-year-old or older car will typically have done lots of kilometres - expect 200,000 km or more on average - and that means it's in the twilight of its useful and reliable life. You should anticipate more regular repairs as a result. If you use a BMW dealer you’ll pay heaps for servicing and parts, but if you use an independent BMW specialist mechanic you shouldn’t pay any more than you would for any other brand of car.

Parts are readily available for the E90 3-Series and won’t be a problem in the foreseeable future. They will be relatively expensive if bought from a BMW dealer, but are more affordable if you buy from the aftermarket, and they can be imported from overseas at a very reasonable cost.

You can fit conventional tyres to it. Take it to a tyre retailer and they should be able to help you.