Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What are the tire model specifications for the BMW 3 Series?

1 Answers

DiElisa

07/30/25 8:16am

The BMW 3 Series has two tire size models: the 225/45R18 model specification for the Sport Package and the 255/40R18 model specification for the Sport Night Package. In 225/45R18, the first number 225 represents the tire width of 225MM, 45 indicates the tire aspect ratio is 45%, meaning the section height is 45% of the width, and 18 represents the rim diameter of 18 inches. The middle letter R stands for radial tire. In 255/40R18, the first number 255 represents the tire width of 255MM, 40 indicates the tire aspect ratio is 40%, meaning the section height is 40% of the width, and 18 represents the rim diameter of 18 inches. The middle letter R stands for radial tire. The main tire brands for the BMW 3 Series include Michelin PS3, Pirelli P7, Bridgestone Potenza, and Turanza. If you want to replace the tires yourself, follow these steps: Take out the spare tire and jack, place the jack under the 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 ensure the jack is at a right angle to the ground. Remove the hubcap and loosen the nuts counterclockwise. Do not fully loosen them; just enough to eliminate resistance. Keeping the tire on the ground when loosening the nuts for the first time ensures you turn the nuts, not the tire. Turn the nuts counterclockwise until they are loose, repeat this step for all lug nuts, and then remove all nuts completely. Place the new tire on the hub, carefully aligning the tire rim with the wheel bolts. Install the lug nuts and tighten them by hand until all nuts are concealed. The tire replacement is now complete. In addition to the model, tires are also marked with 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. Speed rating: Indicates the maximum speed at which the tire can carry a specified load under specified conditions. Letters A to Z represent certified speed ratings 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 specification compatible with the tire for practical use, such as Standard Rim 5.00F.

Was this review help?

3

5

Share

More Forum Discussions

What is the replacement standard for sidewall scratches on tires?

The replacement standard for sidewall scratches on tires is ≤2mm, which is acceptable for use, while ≥3mm is recommended for replacement. The sidewall of a car tire is the weakest part in terms of strength but also the most prone to damage. This is because sidewall parking is most likely to cause scratches, and running over debris while driving can easily damage the sidewall rubber. Below is some relevant information about tires: 1. Tire classification: Car tires can be categorized into more than 10 types based on their use, such as passenger car tires, truck tires, and off-road tires. Structurally, they can be divided into radial tires, bias tires, full-size spare tires, and non-full-size spare tires. 2. Tire characteristics: Car tires have different characteristics depending on their use. Passenger car tires offer higher comfort, while off-road tires provide better road passability. When selecting a car, it is important to consider the road conditions where the car will be driven to avoid choosing the wrong type, which could affect tire performance.

What are the consequences of being caught speeding by electronic surveillance and having 12 points deducted?

If you are caught speeding by an electronic eye and have 12 points deducted, you must report to the local traffic police station within 15 days of the violation to handle the matter. Speeding over 50% will result in an immediate deduction of 12 points, and the motor vehicle driver must report to the traffic management department of the public security authority at the place where the motor vehicle driver's license was issued or where the violation occurred within 15 days. Introduction to penalties for speeding in highway interval speed monitoring: 1. According to regulations, speeding less than 10% will result in a warning, with no points deducted or fines imposed; 2. According to regulations, speeding between 10% and 20% will result in 3 points deducted and a fine; 3. According to regulations, speeding between 20% and 50% will result in 6 points deducted and a fine; 4. According to regulations, speeding over 50% will result in 12 points deducted, a fine, temporary suspension of the driver's license, and mandatory training.

Is 98 More Durable Than 95?

98-octane gasoline is not necessarily more durable than 95-octane. A higher octane rating does not mean better gasoline quality, as there is no direct correlation between gasoline octane ratings and fuel quality. Below are the relevant details: 1. The octane rating of gasoline only represents its octane value. Both 95-octane and 98-octane gasoline are high-octane fuels. Compared to 95-octane, 98-octane gasoline has an octane value that is 3 units higher. Increasing the octane value of unleaded gasoline by even one unit requires greater technical difficulty and higher processing costs. Therefore, high-octane gasoline is priced higher than low-octane gasoline. 2. Different engines use gasoline with different octane ratings, primarily determined by the engine's compression ratio. Generally, engines with a compression ratio above 8.0 should use 92-octane gasoline; those above 9.0 should use 95-octane gasoline, and engines with a compression ratio above 10.0 should use 98-octane gasoline.

What Taxes Are There on Imported Cars?

Imported cars are subject to the following taxes: customs duty, value-added tax, and consumption tax. Below are the relevant details: 1. Tax rate = basic customs duty (25%) + consumption tax (10%-40%) + value-added tax (17%) + others (mainly depends on displacement), totaling approximately 120%. The customs duty mainly depends on the displacement of the imported car; different displacements and brands result in different customs duties. 2. Vehicle displacement and consumption tax: 1% for displacements up to 1.0L (inclusive); 3% for displacements above 1.0L up to 1.5L (inclusive); 5% for displacements above 1.5L up to 2.0L (inclusive); 9% for displacements above 2.0L up to 2.5L (inclusive); 12% for displacements above 2.5L up to 3.0L (inclusive); 25% for displacements above 3.0L up to 4.0L (inclusive); 40% for displacements above 4.0L.

What do the gear letters on an automatic transmission car represent?

Automatic transmission gear letters represent the following: 1. P stands for Park, used when the car is parked and not in use. In this position, the wheels are mechanically locked to prevent rolling. 2. R stands for Reverse, used when backing up. 3. N stands for Neutral, used for temporary stops (such as at a red light). To prevent the vehicle from rolling on a slope, the brake must be applied. 4. D stands for Drive, also known as the driving gear, used when moving forward. 5. L stands for Low gear, used when going downhill or on long descents. This limits the car to the lowest gear, allowing the engine to assist in braking, reducing the need for prolonged brake use and preventing brake overheating. 6. S stands for Sport mode. When engaged, gears can be freely switched, but the shift timing is delayed to keep the engine at higher RPMs for increased power. This mode significantly increases fuel consumption.

Where is the terminal device number of the car?

The terminal device number of a car can usually be found on the vehicle's driving license, which corresponds to the last six digits of the vehicle identification number (VIN). The VIN, also known as the vehicle identification code, is an alphanumeric sequence typically consisting of 17 characters. Currently, there are two main standards for vehicle identification numbers: the EU's ISO 3799 standard and the North American standard, with the latter being more stringent and compatible. Under the North American VIN standard, the specific meanings of the digits are as follows: 1. Digits 1 to 3 represent the manufacturer, brand, and type. 2. Digits 4 to 8 indicate vehicle characteristics, including vehicle type, chassis, engine model, rated weight, and other details. 3. The 9th digit is a check digit. 4. The 10th digit represents the vehicle's production year. 5. The 11th digit indicates the assembly plant where the vehicle was produced. 6. The last six digits are the vehicle's production serial number.

Trending Ranking

What is the ratio of antifreeze to water?

What is the buckle on the seat belt?

What to Do When the Inside of the Car Windows Fog Up?

What is the function of the mid-section of a car's exhaust system?

How to Adjust the Height of a Car Clutch?

How to Solve the Abnormal Noise from the Left Front Wheel?

How to Access the Third Row of the Toyota Alphard?

What to Do When the Roewe 550 Key Fails to Start the Car?

Is It Necessary to Install an Underbody Guard?

What Causes Dual High Pressure in Car Air Conditioning?

More Forum Discussions

How Much Engine Oil Should Be Added to the BYD Tang?

What are the precautions for alcohol disinfection inside the car?

How to deal with the simultaneous violations of driving against traffic and crossing the line?

How many points will be deducted if a sedan is caught carrying goods by traffic police?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.