BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

Theory

The era of steel stamped wheels, apparently, slowly consigns to the past. Steel is forced out by light alloys. Than the steel disk is bad? Yes, in general, almost everything it is good. Cheap, reliable, rather strong. At very strong blow does not burst, and it is rumpled – means, there is a chance to restore it. If you perceive the car only as the hard worker if you are not confused by a type of steel stamping if your purse is not too burdened by notes – nothing the best is necessary to you. Take. And the one who is anxious with own image clear, behind the price will not stand, and will take light-alloy. The look at it, of course, is more modern, than at steel. And a variety of types is wider. The production technology of disks from light alloys allows designers to embody any imaginations in metal, to do wheels in any style – from a retro to futuristic. Light alloys give the chance to sensitively monitor trick of technical fashion what you will not tell about steel – stamping it and there is a stamping, on it design especially will not play, opportunities are limited, and therefore – with it it is boring.

But not only to these desire of producers to replace steel with light alloys speaks. There are also other reasons, not less weighty. Purely technical. For example, weight reduction. Let's notice, not the gross weight of the car – if the polutoratonny device means and will dump couple of tens of kilograms, hardly it will be big achievement. The speech about weight reduction of not subspring parts, that is all that jumps shivers and turns under a car body. Here fight goes for each kilogram.

Accuracy of production of light-alloy wheels is much higher, than steel. So, and balancing can be carried out more precisely. Application of a light-alloy wheel improves cooling of brake knot, and not only thanks to high heat conductivity of the metals entering alloy, but also because in it it is admissible to do very big openings (without losing durability and winning in weight) that promotes the best obduv. There were quite enough listed advantages in order that the leading firms relied on light alloys – aluminum and magnesian. Despite of their high cost.

Is, however, in a camp of steel disks one which can argue with light-alloy on beauty, ease and "produvayemost". It is classical spoke a disk. Once it was very popular, it was put on the most prestigious cars, on it won races... But eventually it did not sustain the competition even with usual stamped. First, its production more labor-consuming and consequently, he is dearer. To stamp a nave and a r