Does the BMW 525 have a spare tire under the trunk?

[WalkerRose]

The new BMW 525 does not come with a spare tire because the new BMW 5 Series is equipped with run-flat tires. Even if punctured, it can continue driving at 80 km/h for up to 80 kilometers, providing ample time for tire replacement. Tire configuration of the BMW 525: The 2022 BMW 525 is fitted with 245/45R18 tires, using Pirelli brand run-flat tires. Run-flat tires are technically called "Run-Flat System Component" (RSC). Structurally, run-flat tires are not significantly different from regular tires, but they feature reinforced sidewalls designed to support the vehicle even when the tire is punctured or loses pressure suddenly. Compared to regular tires, run-flat tires have thicker and more robust tread designs, with sidewalls that resist deformation better. In the event of a puncture or sudden pressure loss, the vehicle can still travel up to 80 kilometers at a speed of 80 km/h (specific details can be found in the vehicle manual). The reinforced sidewalls ensure that the tire and wheel rim do not deform, preventing shifts in the vehicle's center of gravity and enhancing driving safety. More automakers are opting not to include spare tires: Traffic laws do not mandate that vehicles must be equipped with spare tires, so many manufacturers are now reducing or eliminating spare tire configurations. This helps lower manufacturing costs and reduces vehicle weight, while also increasing trunk space. Besides BMW, luxury models such as the Mercedes-Benz C-Class, Cadillac CT, and Infiniti QX50 no longer come with spare tires.

[MadelineMarie]

As a BMW 5 Series owner, I remember being quite curious about what was under the trunk when I first bought my 525. Lifting the floor panel revealed an empty space with no spare tire. This is a classic BMW design, as the 525 series typically comes equipped with Run-flat tires, also known as puncture-proof tires. In case of a flat, these tires can still support driving for about 50-80 kilometers to reach a repair shop, saving the hassle of changing tires. The space under the trunk usually only holds an air pump or a tire repair kit, keeping the area neat and making it easier to load luggage. After driving it for several years, I find this setup quite convenient, especially for city commuting—less weight from not carrying a spare tire makes handling more agile. However, Run-flat tires do have obvious drawbacks: they cost a few hundred dollars more than regular tires when replacing, and they tend to be noisier at high speeds. As a user, I recommend regularly checking the tire pressure monitoring system to prevent unexpected leaks. Once you get used to it, this design actually enhances both safety and convenience.

[StTravis]

With over a decade of car repair experience, I've handled numerous BMW 525 cases where spare tires are generally absent beneath the trunk. BMW prefers Run-flat tires, featuring reinforced sidewalls that allow continued driving after a puncture, eliminating tire-changing steps. The trunk typically includes basic tools like an inflator, optimizing space to reduce vehicle weight and improve fuel efficiency. From a maintenance perspective, Run-flat tires have higher installation costs and generate more noise, but they reduce long-term towing needs. I always remind owners to monitor the dashboard's tire pressure warning light and not panic only when alerted. In practice, regular tire wear inspections and maintenance extend lifespan far more practically than carrying a spare, significantly enhancing driving safety.

[AlexanderDella]

The details of car design fascinate me. The BMW 525 indeed does not come with a traditional spare tire under the trunk. The core reason is the use of Run-flat technology, which maintains the tire's internal structure stability when punctured, allowing you to drive up to 80 km at 80 km/h. Under the trunk floor, there's often an air pump or sealant toolkit, enhancing lightweight design for better handling flexibility. In modern trends, run-flat tires reduce the need to carry a spare, though with a slight compromise in comfort. If you often drive in suburban areas, knowing this is a big help—don't mistake it for BMW cutting corners.