Thread: Purchasing a 540i, Upgrades,Reliability
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Old 10-15-2007, 05:14 PM
James James is offline
 
Join Date: Sep 2002
Location: Rockville, MD
Rides:2008 MB ML350 & C300
Region: USA - Mid-Atlantic
Posts: 2,309
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Cooling system is also weak on the V8s. Valve cover gaskets are nearly as common in terms of needing replacement. Wheel bearings, rotors, dash pixels, window regulators, and control arm bushings are all common failures too. Not sure about the M62, but I now on the S62 that carbon buildup is a problem. Catalytic converters are also very costly and should have been replaced by now.

Upgrades - I strongly suggest a lightweight flywheel, but look for a sprung-hub solution like the one Rogue Engineering offers. I guess it depends on your budget, but you could also swap in a 3.15 open diff, or M5/Dinan LSD if you want to spend some real money.
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