
The vehicle does not come with run-flat tires. The 2021 Volvo S90 does not feature run-flat tires across all its models. Advantages of run-flat tires: Run-flat tires primarily rely on their thickened rubber sidewalls, which can support the vehicle's weight even when the tire loses air pressure due to a puncture. If the Volvo S90 were equipped with run-flat tires, a puncture would not cause severe tire deformation, thereby significantly affecting the vehicle's driving performance. Examples of models equipped with run-flat tires: BMW 6 Series GT - 2021 Model - Revised - 630i Luxury Design Package; Mercedes-Benz V-Class 2018 V260 Premium Edition; Mercedes-Benz GLE - GLE350 - 4MATIC Luxury Model.

I've been driving my Volvo S90 for over three years now. When I first bought it, I specifically checked the tire configuration—it didn't come with run-flat tires as standard. The factory setup includes regular tires, a spare tire in the trunk, and a tire pressure monitoring system. Run-flat tires, which allow you to drive dozens of kilometers even after a puncture, sound cool, but I think the S90's design prioritizes overall safety performance, like its automatic emergency braking and side-impact protection. Tires are the only part of the car that touches the road. Switching to run-flats isn't impossible, but you'd need to visit a professional shop to adjust the suspension, or else ride comfort could suffer. Anyway, I always check tire wear during maintenance to ensure proper pressure—that's how I drive with peace of mind.

Most Volvo S90 models don't come with run-flat tires (RFT) as standard equipment, which I've researched compared to BMW's standard RFT configuration. Run-flat tires are impressive - they allow continued driving after a puncture, but come with several drawbacks like a harsher ride, increased noise, and sometimes being rougher on road conditions. The S90's TPMS system provides real-time tire pressure monitoring as a compensatory feature. If you frequently drive on highways and are concerned about blowouts, you might consider aftermarket RFT replacements, though be aware costs will jump several times higher and comfort will be compromised. Personally, I trust the factory setup more - keeping a spare tire on hand is sufficient, as long as you perform regular inspections.

A friend who drives an S90 told me that his car doesn't have run-flat tires; it comes with standard regular tires, a spare tire, and a tire pressure warning system. The strength of run-flat tires lies in their safety redundancy, but their practicality varies from person to person. Especially since the S90 emphasizes handling balance, switching to run-flats might disrupt that harmony. In case of a tire blowout, the TPMS provides early warnings, helping you pull over to change the tire. If you're really keen on run-flats, it's advisable to check your car's configuration and model year—some higher trims might offer them as optional. In most cases, it's not worth the hassle. Remember, regular tire maintenance is common sense.


