dAHLer Turns Up the Heat on the BMW Z4 M40i With Up to 455 Horsepower
The BMW Z4 M40i has always been more than just a pretty face. With its classic roadster proportions, a silky inline-six under the hood, and rear-wheel-drive dynamics, it offers one of the purest open-air driving experiences in the BMW lineup. But for those who crave even more excitement, Swiss tuning firm dAHLer Competition Line has […]
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