What is the size of the Mazda 3 brake disc?
4 Answers
The size of the Mazda 3 brake disc is 312mm. Brake discs can be divided into two types by structure: solid brake discs and ventilated discs. Taking the 2020 Mazda 3 as an example, its body dimensions are: length 4662mm, width 1797mm, height 1445mm, wheelbase 2726mm, and fuel tank capacity 50l. The 2020 Mazda 3 is equipped with a 1.5l naturally aspirated engine, with a maximum power of 86kw and a maximum torque of 148nm, matched with a 6-speed manual transmission. Its front suspension uses a MacPherson independent suspension, and the rear suspension uses a torsion beam non-independent suspension.
I remember when driving the Mazda3 Axela, the brake disc sizes were approximately 280mm in diameter for the front wheels and around 270mm for the rear, but these numbers can vary depending on the model version. For example, the base model might be slightly smaller. When replacing brake discs, pay special attention to thickness—new discs are about 22mm thick, and they should be replaced once worn down to below 19mm, otherwise braking efficiency drops significantly. Once, while driving on a mountain road with frequent braking, the discs overheated, causing a loss of braking power and nearly leading to an accident. Regular inspections shouldn’t just focus on size; you also need to ensure the disc surfaces are free of scratches or warping. Choosing OEM specifications is crucial—while upgrading to larger discs can improve performance, they must be matched with the right calipers, or uneven braking can create safety risks. Never take driving lightly—safety always comes first.
With years of experience in car repair, I've found that the Mazda3 (Axela) typically has brake disc sizes of 280mm front and 270mm rear in diameter, with a standard thickness of about 22mm. There can be significant variations across different model years and configurations—for instance, manual versions might have smaller discs. In my work, I often encounter owners who neglect thickness checks, leading to severe disc wear and longer braking distances. I recommend measuring disc thickness every six months or 10,000 kilometers, with a wear limit around 18mm. When replacing discs, always use specialized tools to verify if the dimensions match OEM specifications, and never opt for non-genuine parts casually. Proper sizing ensures responsive braking. Don't skimp on this minor maintenance cost—it could be dangerously critical during high-speed emergency stops.
When I first started driving, I was curious about the size of the Mazda3's brake discs. After checking the information, I found that the front discs are about 280mm and the rear discs are around 270mm. The size affects braking performance; if they're too small, the braking force will be insufficient. I once tried emergency braking on the highway and felt that the rear wheels had weaker braking force, so I checked the disc surfaces. If the thickness is too thin, it's unsafe. I recommend that beginners develop the habit of checking these things—safety is no small matter. Don’t overlook regular maintenance when driving.
