What is the tire model of BYD S7?

[StMolly]

There are two types of tires for the BYD S7: 225/65R17 and 235/55R18. The first numbers, 225 and 235, represent the tire widths of 225mm and 235mm, respectively. The numbers 65 and 55 indicate the aspect ratios of the tire cross-sections at 65% and 55%, meaning the height of the cross-section is 65% and 55% of the width. The numbers 17 and 18 represent the rim diameters in inches. The letters or symbols in between have special meanings: "X" indicates a high-pressure tire; "R" and "Z" indicate radial tires; "—" indicates a low-pressure tire. The BYD S7 comes with Michelin tires as standard. If you want to replace the tires yourself, you can follow the steps below: Take out the spare tire and jack, place the jack under the vehicle frame of the tire to be replaced, ensuring the jack touches the metal part of the frame. Raise the jack until it supports the car. The jack should be positioned under the vehicle, and you should check to ensure it is at a right angle to the ground. Remove the hubcap and loosen the nuts counterclockwise. Do not fully loosen the nuts; just loosen them enough to eliminate resistance. Keeping the tire on the ground when loosening the nuts for the first time ensures that the nuts turn, not the tire. Turn the nuts counterclockwise until they come off. Repeat this step for all lug nuts and completely remove them. Place the new tire on the wheel hub, carefully aligning the tire rim with the wheel bolts. Install the lug nuts and tighten them by hand until all nuts are snug. At this point, the tire replacement is complete. In addition to the model, tires also display the following common data: Tire cord material: Indicated by Chinese pinyin, such as M for cotton cord, R for rayon cord, N for nylon cord, G for steel cord, and ZG for steel radial cord tires. Speed rating: Indicates the maximum speed at which the tire can carry a specified load under defined conditions. Letters from A to Z represent certified speed ratings ranging from 4.8 km/h to 300 km/h. Common speed ratings include: Q: 160 km/h; H: 210 km/h; V: 240 km/h; W: 270 km/h; Y: 300 km/h. Rim specification: Indicates the rim size compatible with the tire, making it easier for practical use, such as standard rim 5.00F.

[AngelinaLee]

I've been driving a BYD S7 for several years, and I remember the tire size is 225/65 R17. What do these numbers mean? The 225 means the tire width is 225 millimeters, the 65 indicates an aspect ratio of 65% which gives moderate height without too much bumpiness, and R17 means 17-inch rims. When actually driving, don't just memorize the size - also consider replacement recommendations. I usually check the tread every 50,000 km and replace them if severely worn. The BYD S7 typically comes with Giti or Maxxis tires as original equipment, so it's safest to find identical specifications when replacing. Don't mess with the pressure either - 2.3 bar in summer and 2.5 bar in winter can extend lifespan and prevent blowouts. When encountering slippery snow roads, upgrading to winter tires is practical, but maintaining standard dimensions is most reliable.