Wheel and tire size ratio

When it comes to wheel specifications, the size is usually presented in a format like 18x8.5, 5x114.3, +42. This means: 18 inches in diameter, 8.5 inches in width, 5 bolts, with a 114.3 mm bolt pattern, and an offset of +42 mm. There's no actual term like "thickness" or "thinness" used when describing a steel rim. So, let's move on to tires. The tire marking looks something like 245/40-18. Here, 245 refers to the width of the tire, 40 represents the aspect ratio (which can be thought of as the "height" or "thickness" of the sidewall), and 18 indicates the wheel diameter in inches. If someone is asking about "thick" or "thin" tires, they're likely referring to the tire's profile or the height of the sidewall. The combination of the wheel and tire is determined by the vehicle's design. For example, if your car originally comes with 16x7 wheels paired with 225/55-16 tires, upgrading might mean going for 18x8.5 wheels with 245/40-18 tires. As you increase the wheel diameter and width, the tire's sidewall becomes lower, giving the appearance of being "thinner." This is done intentionally—because if the tire's height stayed the same, the larger wheel could cause rubbing against the car's body or suspension components. It’s important to keep the overall diameter of the tire as close as possible to the original, to ensure proper speedometer readings, handling, and clearance. That’s why when upgrading, you often see a balance between increasing the wheel size and decreasing the tire's aspect ratio. This way, the performance and fitment remain optimal. Always consult with a professional or check the manufacturer's recommendations before making any changes.

Oil Industry Mass Flow Meter

Zhejiang Sealand Technology Co., Ltd.is a trustworthy supplier of Oil Mass Flow Meter, Oil Mass Flowmeter, Oil Coriolis Flow Meter, Oil Coriolis Flowmeter, Oil Coriolis Flow Meter, ATEX, IECEx & CE approved.


Operating Environment

Atmospheric pressure: 85kPa~106kPa

Ambient temp.: Refer to Chapter 1.6

Relative humidity: 5%~95%, non condensing


Operating conditions

Fluid: Liquid/Gas
Fluid temperature: -200°C~+200°C (higher temp. model is customizable)

Nominal pressure: 4MPa or 25MPa (Customizable)

Supply voltage: AC 85~265VAC, 50/60Hz or DC 12~24VDC(±5%), 5W

Outputs: Pulse 0~10KHz, RS-485, 4-20mA & HART (optional)


The meter consists of mass flow sensor and transmitter. Mass flow sensor is a phase-sensitive resonant sensor based on Coriolis effect, composed of vibration tube, signal detector, concussion driver, structural support, shell, etc.

Mass flow transmitter is a micro-programming-centered electronic system, which supplies thrust to sensor, transforms sensor signal into mass flow signal & others, and improves accuracy in accordance with temperature parameter.
It`s composed of switching power supplier, guard grating, core processor board, display module, etc., installed in a ex-proof junction box. Switching power supply offers power for transmitter; safe grating isolates sensor and transmitter intrinsically; core processor detects & processes sensor phase signal, sends mass flow signal and process communication.



Oil Mass Flow Meter, Oil Mass Flowmeter, Oil Coriolis Flow Meter, Oil Coriolis Flowmeter, Oil Coriolis Flow Meter

Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com