MX8 is basically MX6's big brother. Both are in-ground side pool suction cleaners. Though MX8 is bulkier, the two models utilize the same part number R0526100 tracks. Because of the size and feature differences, MX6 and MX8 have different wear and tear timeline. MX8 tracks may wear off faster. Its bulk allows it to have a wider cleaning path, allowing it to pick up more debris. The MX8 model can move in reverse, creating an even wear on both directions of the track treads. MX6 can only move forward but it can move each of its tracks independently. Both models perform their functions efficiently with the MX8 model being around for quite some time. But as original parts wear off, there's often a compromise between quality and affordability. High-quality can mean a lot of things but with pool cleaner tracks replacement this means big savings and infrequent track replacements - two things that are actually interconnected. This pair of high-quality and durable tracks are comparable to OEM standards. Lightweight yet well-made, you can get good use out of these tracks for years to come. The durable heavy-duty rubber can resist wearing both on its inner and outer treads, ensuring a snug fit for longer. And for the price of one, you can get a pair of these high-quality and perfect-fit MX6 and MX8 tracks. You can't find a better deal than this - OEM quality for an affordable price. But why are your tracks wearing-off prematurely? It's easy to blame the quality of the product but there are many factors that can cause premature tread wear this can include: Excessive pump speeds or very strong flow (the MX6 model only requires low pump speeds) Rough/abrasive pool surface The pool cleaner always being stuck in one corner for a prolonged period ，it will continue rolling, sc the treads on the pool surface