Accelera PHI 2 275/40 R18 103Y XL

The Accelera PHI 2 is a high-performance tire that offers excellent grip and handling. It is designed for use on sports cars and other high-performance vehicles. The PHI 2 features a unique tread pattern that provides excellent traction in both dry and wet conditions. The tire also has a special compound that helps to resist wear and tear. This tire is designed to be used in dry conditions.

What does 275/40R18 mean?


The tire width is 275mm.


The aspect ratio of the tire is 40. Aspect ratio is the relative height of tire sidewall. The number refers to the percentage of sidewall height in relation to tire width.


The letter in the middle refers to tire construction. Practically all tires sold for cars are radials.

Sometimes you also see tires with RF or ZR. RF indicates the tire is run flat, whereas ZR means the tire has speed rating higher than V. These tires are also radials, as the R indicates.


Rim diameter for the tire.

275/40R18 103Y tire size

The width of 275/40R18 103Y tire is stated in millimeters and sidewall height in percentages. In this table you’ll find out the 275/40R18 103Y tire size in inches as well as few additional metrics:

In inchesIn millimeters

Section Width


Sidewall height


Diameter / Height




Rim Diameter



756 per mile 470 per kilometer

Rim Size for 275/40R18 103Y Tires

Recommended rim sizes for 275/40R18 103Y tire:

DiameterWidth Range

What does 103Y mean?

The load index 103 means that the tire has been designed to support 1929 lbs or 875 kg.

The speed index Y means that the tire has been designed to be used in speed up to 186 mph or 300 kph.

This size of tire is usually used on a sports car.


Accelera PHI 2 is a tire brand that is known for its quality and performance. The company has been in business for over 20 years and has a reputation for providing high-quality products. The Accelera PHI 2 is a tire that is designed for high performance and is made from a unique blend of rubber and other materials. The company offers a wide range of sizes and tread patterns for this tire, which makes it a good choice for many different types of vehicles.

Tire Specification

Brand: Accelera
Model: PHI 2
Season: Summer
Size: 275/40 R18
Load Index: 103 — 875 kg | x4 - 3500 kg
Speed Index: Y — 300 km\h
Car Type:Passenger
Road: City
XL / Extra Load: Yes
RunFlat technology: No
Commercial / Reinforced: No
EU Label
Fuel efficiency: C
Wet grip: C
Noise level: 72dB