Diamondback 235/75R17.5 Radial Tire w/ 17-1/2" Solid Center Wheel - Offset - 8 on 6-1/2 - LRJ

Video Transcript for Review of Taskmaster Trailer Tires and Wheels - Tire with Wheel - TA37GR

Hello, everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at this Diamondback 235/75R17.5 Radial Tire in a Load Range J, and it's mounted on this 17 1/2 inch Silver Solid Center Wheel with the 8 on 6 1/2 inch bolt pattern. Now, this tire and wheel assembly is ideal for heavy-duty trailers. Now, what's unique on this assembly is this tire is match mounted and balanced to the wheel for ride comfort and durability. Basically, match mounting of your tires and wheels is a process in which the tire's installation position onto the wheel is specifically selected to minimize final force of imbalance. The method to match mounting is what they do is they align the tire's lightest spot with the wheel's heaviest spot and eliminates most of the radial force that can cause tire and suspension wear.

Then they do the final balancing by applying weights to specific spots on the inside and the outside lips of the wheel to eliminate any chance of uneven wear or vibration. So just to show you, if you look on the outside, there's the weight here, and if we spin it around to the inside, they have the weight here. So basically, this tire and wheel assembly is balanced, so when you get it, it's already to bolt on. Now, the wheel they use on this is a heavy-duty steel wheel. As you can see, it's a solid center design, which is sturdy and corrosion resistant.

They do use a three-step finishing process on it that includes first a zinc phosphate bath, then an e-coat primer, and then a silver powder coat on both sides of the wheel. Now, this is a hub piloted wheel, and that means it centers onto the hub, not the lugs, so it will require the use of flange nuts for installation. The part number for the flange nuts we do sell separately, it's part number 95188, and they're usually listed on this product page as a related product. Now, this wheel does have a negative offset of 0.19 inches. The negative offset is when the hub mounting surface right back here is in the back of the wheel center line, so the center line of the wheel is right here, so basically, that mounting surface moves back 0.19 inches, and a negative offset means it'll move the tire away from the trailer a little bit.

The size on the wheel itself, the diameter is 17 1/2 inches, the width on just the wheel is 6 3/4 inches. Now, this wheel does have a bolt pattern of 8 on 6 1/2 inches, and if you wanna measure that on a wheel that's an even number of lugs, like in this case, eight, it's pretty easy, because you can see the lug holes are directly across from each other, so when you measure, pick any hole, let's say this one, measure from the center of that hole directly across to the center of the hole right across from it. So on this wheel it measures 6 1/2 inches, so that means it's an 8 on 6 1/2 inch bolt pattern. We mentioned the wheel lugs, they use a 5/8 inch by 18 sized flange nut. Weight capacity on just the wheel is 6,005 pounds, and the pilot hole diameter, which is this large hole here, which is critical since this is a hub piloted wheel, diameter on this opening is 4.76 inches.

Now, the tire on it is a radial tire, it is constructed with double steel belts for a nice long life, it's great for highway use, has a nylon tread firming belt overlay to help prevent tread separation. And the size, which will be stamped on the sidewall, is gonna be 235/75R17.5, the R means it's a radial tire. Section width on this tire, 9.2 inches, overall diameter from the bottom to the top when it's inflated is 31.4 inches, and this tire is a Load Range J, which means it's a 18-ply tire, so it does have a maximum load capacity of 6,005 pounds, or, I'm sorry, yes, 6,005 pounds at 125 psi. Now, this tire does have a speed rating, all the tires now are coming through with speed ratings on them, and they labeled the sidewall with a letter designation to let you know the speed rating, and where that's at is right after the size we just went over. You'll see two numbers for the load index, and then you'll see the letter M stamped there. The speed rating M means 81 mile per hour speed rating. And this assembly does meet the DOT, Department of Transportation specifications, and the SAE standards. But that should do it for the review on the Diamondback 235/75R17.5 Radial Tire in a Load Range J on this 17 1/2 inch Silver Solid Center Wheel with the 8 on 6 1/2 inch bolt pattern.