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Measurement of the diameter of the front brake disc.


HolyRoach

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How can I determine the dimensions of the brake discs on my 2008 CLC200? Unfortunately, I am unable to bend down in order to remove the wheel and measure it. Consequently, I am interested in purchasing a set of replacement brake discs.

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There is no need to detach the wheel. Instead, place a straight object across the top and bottom of the disc by inserting it between the wheel spokes. Then, measure the distance between these two points.

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Allow the individual who is responsible for fitting them to take the measurements. No manual dexterity required, nor any reliance on magnets or straight edges. 👍👍

I estimate the measurement to be 288 millimetres.

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Regrettably, I must purchase the items in order to have them properly installed. Therefore, I will need to explore other methods. However, my estimate for the front is likewise around 288. Bigger size is superior!

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However, sometimes they make errors.

It is more advantageous to use an Electronic Parts Catalogue (EPC) and your Vehicle Identification Number (VIN) to get the authentic Mercedes-Benz component number. Next, go to the MB store and make the purchase.

Alternatively, if you want to make a purchase from a different source, you may look for the MB component number on websites like AutoDoc, where you will find a range of aftermarket options. Then search for reputable brands like as ATE, Brembo, Zimmermann, and others that are recognised for their quality.

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When I changed my front discs, I had the choice between two different sizes, with little difference between them. Measuring the diameter precisely may be challenging when there is a hub obstructing the route. An alternative approach is to measure the circumference and then divide it by 3.142. I had sufficient confidence in the accuracy of the measurement to place an order with Autodoc, and the items I received were of the exact size.

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