This weight includes the rotational weight of the car which includes parts that rotate such as the wheel, clutch, flywheel, tires, and drive shafts. The effectiveness of the suspension is dependent on the unsprung weight – less unsprung weight means that the suspension is able to be more responsive and work more effectively. Driving feel refers to the feedback and accuracy from the wheels to the driver’s senses. Unsprung weight is important because the driving feel of the car is directly correlated with it. This weight refers to the total weight that is not supported by the suspension such as the brakes, springs, shocks, links, axle, wheels and tires. Actual HP gain would likely be less than that value by 2-3% due to drivetrain and other losses here and there. You can very roughly estimate the amount of HP you have “gained” from weight reduction by using the equation in this article for sprung weights. This means that you will need less hp to drag the same amount of weight. Simply put, less weight equals more power due to a lower weight:power ratio. Weight reduction is another way of “gaining” extra power. This is the total weight of all the parts on your car that is held up from your suspension such as engine, exhaust, body, and the interior of the car. Each weight type will affect the car differently. There are different types of weights due to static, rotational forces, and spring dynamics. But first let’s dive into the basics of weight reduction and benefits. This article provides a basic insight into why strong lightweight wheels are highly desirable and yield such high prices. The brands we’ll be covering include Volk, BBS, CCW, Apex, HRE, VMR, Enkei, ESR, Gramlights and more. Before we break down the wheels down to see which one has the best bang for buck, we’re going to explain the concept of weight in regards to rotational mass as that has a huge factor on track performance if that’s what you’re looking for. There are tons of aftermarket BMW E46 M3 wheels out there and if you’re in the market to buy you may consider things like brand, price, weight, etc., so we’re doing an article to review some of the popular E46 M3 wheel choices.
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