I've just cracked my near side rear 19" 5 spoke 275 alloy wheel at the cost of £650 to replace plus the tyre that exploded, another £200. I was just driving down a dual carriage way when the tyre de-laminated. On inspection at my trye garage, the allow was cracked. The car has only done 21,000 miles. Later while it was in the MB garage, they advised replacing the front 2 alloys also, as they were both buckled. Another £610 each. I've not been ramming the car up curbs or speed bumps and although I do remember hitting a couple of deep pot holes, surely alloy wheels are not so soft that a minor bump can crack/buckle them? Do I have a bad batch? Are MB alloys problematic? I'm shocked... Shouldn't have bought 19" with low profile tyres. Kids, father Christmas isn't coming this year.