Radial tire has 8-ply rating and 2,540-lb max load at 65 psi. 15" x 6" Aluminum wheel has 6 on 5-1/2 bolt pattern. 1-Year No Excuses Guarantee on tire. Complimentary roadside assistance included.
Features:
Specs:
This tire-and-wheel assembly comes with complimentary roadside assistance for 2 years. If your RV or trailer has a flat tire, call the help line and a technician will come change the flat for you. You can call 24 hours a day, 7 days a week, and 365 days a year from anywhere in the United States, Canada, or Puerto Rico.
This tire has a 1-year No Excuses Guarantee. If within the first 12 months the tire is damaged in any way that's not covered by warranty, it will be replaced at no charge. You will also be compensated a flat labor rate for the cost of mounting the replacement tire.
This aluminum wheel comes with steel inserts in the lug nut wells. The inserts are pressed into the aluminum, and they help prevent the holes from wearing down over time. This ensures that the wheel stays secured to your trailer hub and that you won't have to constantly retorque the lug nuts.
Unlike standard trailer tire tread, which has solid, continuous ribs, the tread on these Castle Rock radials has ribs with breaks. These breaks allow water to run off to the sides. The Castle Rock tread also has sipes. Siping is a process in which thin grooves (or sipes) are cut into the rubber of the tire. The grooves channel water away from the tread so that the tire makes better contact with the road. Both of these features greatly improve traction during wet, snowy, or icy conditions.
Castle Rock radials are constructed with double steel belts and double nylon cords. A protective layer of nylon is wrapped around the steel belts to help prevent tread separation.
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. As a result, radial tires have less rolling resistance and heat buildup, which leads to a longer tread life and improved steering at higher speeds.
Determining the Bolt Pattern
The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.
To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)
On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)
Measuring the distance from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at this Castle Rock ST225/75R15 Radial Trailer Tire in a load range D mounted on this 15" gunmetal gray aluminum wheel with a 6 on 5 1/2" pole pattern. Now this tire wheel assembly is ideal for RVs, campers, and trailers. Gonna zoom in and we'll first talk about the wheel itself. The wheel on this, it's an aluminum wheel. It's very durable, lightweight, and rustproof and this one is the Condor series, which is a split 6-spoke design, and as we mentioned, it's in a gunmetal gray, and you can see it in the back.
Now they do use an automotive grade clear coat finish on the front to protect the wheel from any scuffs and scratches, and they do use steel inserts in your lug nut wells right here where your lug nuts go. This is designed to help keep the wheels securely in place on your trailer hub, prevents the holes from elongating and wearing down, and eliminates the need for a constant re-tightening of your lug nuts. Now the wheel itself, the dimension on it, the diameter, which is always measured inside to inside straight across is 15". The width on just the wheel by itself is 6" wide. And we mention this wheel has a bolt pattern of 6 on 5 1/2" and if you wanna measure that on a wheel, that's an even number of lugs, like in this case six, all you have to do, because the lug holes are directly across from each other, just pick any lug hole, let's say this one, measure from the center of that directly across to the center of the lug hole across from it.
On this it'll measure 5 1/2" so it's a 6 on 5 1/2" bolt pattern. Does use a wheel lug size of 1/2" by 20, and the weight capacity on just the wheel by itself is 2,830 pounds. And one thing I do wanna mention, if you look at the center of the wheel, there is no center cap in this. It is not included. If you do want a center cap, we do offer those separately.
And when you do get a center cap, you want it to have the same diameter as this pilot hole, which is 4.25" 'cause your center cap will go through this pilot hole when you install it. Now the tire on this is a Castle Rock Radial Tire. It is constructed with double steel belts, double nylon ply. Does use a nylon tread firming belt overlay around the tire to help prevent tread separation, and it is a radial ply tire, so it is great for highway use. If you look at the tread on this, they do have the siping on the tire tread.
Basically those are the cuts that are on the tire blocks and what that does is it breaks up the water underneath the tire to improve the traction during wet, snowy, or icy conditions. This tire is an ST tire, which stands for Special Trailer Tire, uses the sturdy sidewall so they can handle heavy loads and it is created specifically for trailers. It's not intended for use on other vehicles. The tire size, which will be stamped on the sidewall ST225/75R15. The R again means it's a radial tire. The section width on this tire is gonna be right at 8.8 inches. The overall diameter from the bottom to the very top when it's inflated is 28.3. And this tire is a load range D, which means it's an 8-ply rated tire. Has a maximum load capacity of 2,540 pounds at 65 PSI. And I did wanna mention the trailer tire does have a speed rating on it and the speed rating is also stamped on the sidewall and where that is at is if you go right where the size was we went over, if you go a little bit further, you'll see it says speed rating L, and then it'll say in parentheses 75 miles per hour. Now this does offer a complimentary roadside assistance for two years. They give you flat tire service available 24/7 anywhere in the US, Canada, or Puerto Rico, and this whole assembly does meet the DOT Department of Transportation specifications. But that's gonna do it for the review on this Castle Rock ST225/75R15 Radial Trailer Tire in a load range D on the 15" gunmetal gray aluminum wheel with the 6 on 5 1/2" bolt pattern.
Do you have a question about this Trailer Tires and Wheel?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.