2018 Acura RLX Tire Size

The original tire size for your 2018 Acura RLX is listed below. Tap on the box to view a color-coded explanation of the best Acura RLX tire size.

245/40R19/XL 98W

Simplified Size:  245-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Acura RLX is 245/40R19/XL 98W.  A color-coded explanation of the 2018 Acura RLX's tire size is shown below.


This number indicates that your tire has a width of 245 millimeters.


This number means that your tire has an aspect ratio of 40%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 40% of the width.  In this case, the sidewall height works out to be 98 millimeters.


This letter denotes how your tire was constructed.  Radial is the standard construction method for about 99% of all tires sold today.

BBias Belt

The tire size was designed to fit rims or wheels that are 19 inches in diameter.


The mark of XL means extra load.  A tire with this designation can handle higher inflation pressures than a regular tire, which increases its maximum load.


This tire has a load index of 98, which means it's capable of carrying a load of 1650 pounds (750 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.


This tire has a speed rating of W, which means 167 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.