With a 89 535i BMW its overheating any ideas on what all to check?

If your 2008 BMW 535i is overheating, start by checking the coolant level and looking for leaks in the cooling system. Inspect the radiator and hoses for any damage or blockages, and ensure that the thermostat is functioning properly. Additionally, check the water pump for signs of failure and verify that the radiator fans are operating as they should. If those components seem fine, consider having the engine diagnostic codes scanned for any underlying issues.