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BMW tuner Manhart creates 743-hp M6 Coupe

There are BMW M6 drivers out there for whom the stock output of 560-hp and 500 lb-ft of torque just aren't enough. At least that's what German tuner Manhart is betting on in unveiling their MH6 700 version of the M6 hardtop. Manhart has been tuning BMWs and only BMWs for 20 years, and they've worked on everything from the E30 3-series to the latest offerings from the Bavarian automaker.

Customers less satisfied with run-flat, low-rolling resistance tires

In non-April Fool's news, customers who buy cars shod with run-flat tires are nearly twice as likely to have to replace them as people with more conventional tires, according to a J.D. Power and Associates study. The poll also found that customers are also less satisfied with low-rolling resistance tires.

GT3 Challenge Brazil spells out Porsche in Porsches on track

Earlier this month, the Porsche GT3 Cup Challenge Brazil took a break from punishing the pavement to spell the word “Porsche” in Porsches on Estoril's straight. The project took 23 hours of shooting and countless more in planning. Nearly 180 people were involved including drivers, Porsche GT3 Cup Challenge Brazil staff, engineers and mechanics, Estoril Circuit staff and others.