Even though you search and research on the Internet, there’ll be a lot of entries talking about when to change the brake discs of a moto or quad, but any of these articles will explain to you precisely what we, the manufacturers, indicate.
Usually, the users give special importance to the “scratched” effect of the discs as a symptom for its change. It’s evident that this signal can be taken into account, but it’s not the main reason to proceed in consequence. It’s much more problematic if the disc presents a warp (curvature) due to an overheating or a blow.
The scratches of the brake discs are produced because of the friction of the brake pad and the disc, the tread of the motorbike lets mud and little rocks in, and the disc when braking is pushed and ends up leaving grooves. If the usual riding in any street, road or path is already inclined to this kind of conditions, do you imagine when we do off-road riding?
When we talk about the wear of the disc we talk about the reduction of its thickness. It all translates to a change in the braking tact, from a contundent sensation to a spongy one, which results in a safety perception.
All the factors have an impact in this wear: kind of riding, amount of brakes and field. It’s not because of the quantity of kilometers travelled, but because of the way of doing it.
Where can we see the moment of changing a brake disc because of its wear? Each brake disc has a screen printing with this important factor MIN.TH. xx (number in mm.) if we see the inscription MIN.TH. 4,5 that means if our disc arrives to that minimum thickness it’s the time of changing it.
Minimum thickness is the naming used in the sector to point out the final moment of the disc. From that measure there’s only left to us to evaluate what we do, but we recommend you its replacement, keeping the braking system in excellent conditions is “vital”, quite literally.
If you need to change the brake discs of your motorbike, why don’t you trust NG Brake Disc’s ones?