Video Transcript for Karrier ST225/75R15 Radial Trailer Tire with 15" Aluminum Wheel Spec Review

Hi everybody, Andy here with etrailer.com. And today we're gonna take a look at this Kenda Carriers ST225 75R15 load range D Radial trailer tire, with this 15-inch aluminum wheel, with a 6 on 5 1/2-inch bolt pattern. This tire and wheel assembly is going to be ideal for your RVs, campers, and trailers. This special trailer tire or ST tire has sturdy sidewalls so that it can handle heavy loads and it is created specifically for trailers and not intended for use on other vehicles. This Radial tire is constructed with double steel belts and full nylon plies that combine for superior function and long life. This tire features a computer generated tread design and premium rubber compound materials giving you superior traction in wet or dry conditions.

Now as you probably know, Radial ply tires are designed for trailers that are towed on the highway. The cords on a Radial tire are positioned at a 90 degree angle to the direction of travel so that they lay across the width of the tire from wheel lip to wheel lip. This construction prevents the cords from rubbing against one another when the tire flexes unlike the cords on a Bias ply tire. So as a result, Radial tires have less rolling resistance and heat buildup, which leads to a longer tread life and improves steering at higher speeds. Now as I mentioned at the beginning of our time together and as we have stamped here on our tire this is an SST 225 75R15.

The section width is 8.6 inches, and the outer diameter when this is fully inflated is 28.5 inches. This is a load range D, meaning it has an eight ply rating and the maximum load is 2,540 pounds at 65 psi. This does have a speed rating of M indicating a maximum speed of 81 miles per hour. Now this durable black corrosion resistant aluminum wheel is clear coded on the front and as you can see it features this five open spoke design with the machined face on the spokes of the wheels, very attractive and very eye-catching design. And this aluminum wheel comes with steel inserts in the lug nut wells.

Those inserts are actually pressed into the aluminum and they help prevent the holes from wearing down over time. This is going to ensure that the wheel stays secure to your trailer hub, and you're not gonna have to constantly retort the lug nuts. Now the dimensions on this rim measuring the diameter first from bead seat to bead seat, we're sitting at 15 inches in diameter and it is six inches wide. And as I mentioned, the bolt pattern is six on five and a half inches. And in case you don't know, the first number in the bolt pattern is the number of bolt holes, and then the second number is the diameter in inches of the circle on which the bolt holes sit.

So to determine the bolt circle diameter on wheels with an even number of bolt holes as we have here, you're simply going to measure from the center of one bolt hole to the center of the other hole directly across from it. Now the wheel capacity is 2,960 pounds. The wheel stud size is a half an inch by 20. The center cap is sold separately but if you decide to pick one up, you just wanna make sure that it fits the pilot diameter of 3.74 inches. This tire and wheel assembly does meet the Department of Transportation specifications. Well, that's gonna conclude our brief look today. I do hope that it was helpful for you. Again, my name is Andy, thank you for joining me.