Cooper Discoverer A/T 235/70 R17 109T

The Cooper Discoverer A/T is an all-terrain tire that provides excellent traction and handling in a variety of conditions. The tire is designed with a special tread pattern that provides good grip on wet or dry surfaces, as well as in mud and snow. The Cooper Discoverer A/T is also a very durable tire that can withstand the rigors of off-road driving. The Cooper Discoverer A/T is designed to be used in off-road and all-terrain conditions.

What does 235/70R17 mean?


The tire width is 235mm.


The aspect ratio of the tire is 70. 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.

235/70R17 109T tire size

The width of 235/70R17 109T tire is stated in millimeters and sidewall height in percentages. In this table you’ll find out the 235/70R17 109T tire size in inches as well as few additional metrics:

In inchesIn millimeters

Section Width


Sidewall height


Diameter / Height




Rim Diameter



673 per mile 418 per kilometer

Rim Size for 235/70R17 109T Tires

Recommended rim sizes for 235/70R17 109T tire:

DiameterWidth Range

What does 109T mean?

The load index 109 means that the tire has been designed to support 2271 lbs or 1030 kg.

The speed index T means that the tire has been designed to be used in speed up to 118 mph or 190 kph.


The Cooper Discoverer A/T is a popular tire brand that offers a variety of benefits for drivers. Some of these benefits include a comfortable ride, good traction, and a long lifespan. The Cooper Discoverer A/T is a great option for those who are looking for a reliable tire that will last them a long time.

Tire Specification

Brand: Cooper
Model: Discoverer A/T
Season: All season
Size: 235/70 R17
Load Index: 109 — 1030 kg | x4 - 4120 kg
Speed Index: T — 190 km\h
Car Type:SUV
Road: On/Off road
XL / Extra Load: No
RunFlat technology: No
Commercial / Reinforced: No