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Continental ContiSportContact 275/40 R18 103W XL

The Continental ContiSportContact is a high-performance summer tire designed for sports cars, coupes and sedans. With a tread pattern and compound optimized for warm weather and dry roads, the ContiSportContact delivers excellent grip and handling. The tire’s internal structure features twin steel belts reinforced with nylon for durability and stability at high speeds, while Continental’s ComfortPro Technology reduces road noise for a quieter ride. The Continental ContiSportContact is a summer tire designed to provide excellent grip and handling in dry and wet 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 103W tire size

The width of 275/40R18 103W tire is stated in millimeters and sidewall height in percentages. In this table you’ll find out the 275/40R18 103W 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 103W Tires

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

DiameterWidth Range

What does 103W mean?

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

The speed index W means that the tire has been designed to be used in speed up to 168 mph or 270 kph.

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


Continental ContiSportContact tires are designed for high performance driving and provide excellent grip and handling. These tires are available in a variety of sizes to fit a variety of vehicles. Continental ContiSportContact tires are a great choice for anyone looking for a high performance tire.

Tire Specification

Brand: Continental
Model: ContiSportContact
Season: Summer
Size: 275/40 R18
Load Index: 103 — 875 kg | x4 - 3500 kg
Speed Index: W — 270 km\h
Car Type:Passenger
Road: City
XL / Extra Load: Yes
RunFlat technology: No
Commercial / Reinforced: No