2006 Bmw 525i on 2040-cars

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BMW reminds us what made the original M3 so great

Just because many are slavering for the global debut of the 2016 BMW M2 at the Detroit Motor Show doesn't mean BMW will let us forget the coupe that gave the letter "M" its global moxie: the M3. The Roundel has posted the first in a five-part series devoted to that seminal M, the 1987-1991 E30. Built as a homologation requirement for the race car BMW needed to beat Mercedes 190E 2.3/16V in the German Touring Car Championship, it was 1.5 times more expensive than the 325i of the time and company sales heads had doubts about being able to sell all 5,000 of them. As we know, that story had a happy ending. The first models came with a 2.3-liter four-cylinder with 195 horsepower, a chopped and tuned combination of the four-cylinder M10 block first used in 1962 and in Formula 1, with a cylinder head from the six-cylinder M88 that did duty in the M1. By the time the M3 Sport Evolution models marked the end of the first-gen production run, displacement had risen to 2.5 literz and output to 238 hp, but more important than those numbers were the phenomenal handling and relentless race victories. You should definitely check out the video above for BMW's peek into the backstory of the fourth M car after the M1, M535i, M635 CSi, and M5, and arguably most important. But if your M-centric tastebuds prefer a more modern take on the German brand's most driver-friendly vehicles, take a look at the videos below. Related Video:

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Ward's Automotive Ten Best Engines of 2014 dominated by diesels, turbos

With the Car and Driver Ten Best decided, the North American Car and Truck of the Year finalists announced and Cadillac, Ram and Subaru chalking up wins with Motor Trend, it's fair to say that the automotive awards season is in full swing. The next set of trophies to be handed out will be from Ward's Automotive, which has announced the winners of its 2014 10 Best Engines.
The latest contest was marked by the widespread emergence of diesel power and the continued success of turbocharged engines. There was even an electric motor on this year's list. In fact, only three of the ten winners were naturally aspirated and only two winners returned from last year.
"We weren't looking to throw the bums out, as they might say about an election. We were just really impressed with the flood of new powertrains," said Ward's Automotive Editor-in-Chief Drew Winter. Those new powertrains include the 83-kilowatt electric motor from the Fiat 500e, the 1.0-liter, EcoBoost three-cylinder from the Ford Fiesta and the 2.0-liter turbodiesel from the Chevrolet Cruze.