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.
When you’re covering serious miles, this setup is built for it. The 5.30R12 radial tire carries a 6-ply rating and handles up to 1,050 lbs at 80 psi. It’s speed rated M for 81 mph, so it’s perfect for longer road trips and steady highway towing. The radial construction uses double steel belts and double polyester cords, plus a nylon overlay that keeps tread separation from becoming an issue on hot pavement or long hauls.
Salt spray, rain, and road grime don’t stand a chance against this wheel’s finish. The steel wheel is treated with zinc phosphate for paint adhesion, then e-coated with a primer and topped with a baked-on silver acrylic enamel finish. That triple-layer process resists chips and scrapes better than powder coat finishes and held strong through more than 1,000 hours of salt spray testing. The finish keeps its clean look while protecting against corrosion season after season.
This steel modular wheel isn’t just strong—it’s designed to stay tight under load. With a 1,520-lb rating and beveled stud holes that help maintain clamp force on the hub, it holds torque longer without constant retightening. The automotive-rated center disc adds stiffness and helps the assembly stay true even after repeated trips loaded up.
Flat tire on the roadside? This assembly includes a 2-Year Platinum Plus warranty with complimentary roadside assistance. If you get a flat, a technician will come swap it out with your inflated spare—24 hours a day, seven days a week. That extra coverage adds real peace of mind when you’re far from home.
The combo pairs a 12" x 4" steel wheel (4 on 4" bolt pattern, 1/2"-20 bolts, 2.84" pilot) with a radial tire measuring 5.39" wide and 21.57" in diameter. Tread depth checks in at 6/32". Both the tire and wheel meet DOT specifications and exceed Federal Motor Vehicle Safety Standards, so you can roll knowing every detail is up to spec.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
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 Taskmaster 530 R12 Radial Trailer tire in a Load Range C, and it's mounted on this 12 inch Vesper Silver Modular Steel Trailer Wheel with the four on four inch bolt pattern. Now this tire wheel assembly's ideal for stock trailers, utility trailers, and campers. The wheel is a steel wheel. Has the modular design.
When we say "modular design," that's the one that has the round holes all the way around the wheel. That wheel is sturdy and corrosion resistant. They do use a silver acrylic enamel finish on it to resist chipping and other damage better than the power coat finishes. The finish is applied after a zinc phosphate pre-treatment, and then it covers an eco primer layer. So it does give the excellent corrosion resistance with a salt spray rating of more than a thousand hours.
Now the size of the wheel, the diameter, which is measured inside to inside, is 12 inches. The width on just the wheel is four inches wide. You mentioned the bolt pattern is a four on four inch bolt pattern. And if you wanna measure that on a wheel, that's an even number of lugs, like in this case, four, it's pretty easy because the lug holes are directly across from each other. So when you measure it, you just measure from the center, pick any hole.
Measure from the center of that hole directly across to the center of the hole right across from it. On this, it'll measure four inches. So that's a four lug, four inch bolt pattern. Wheel lug size it uses, a half inch by 20. And the weight capacity on just the wheel is 1,520 pounds.
Now if you notice, this does not have a center cap. It is not included. If you do want one, we do sell those separately on our website. You do wanna make sure to get one that'll fit this pilot hole diameter, 'cause when you install your center cap, it will go through this hole. The diameter on this is 2.84 inches. The tire is an ST tire, which means Special Trailer tire. Has the sturdy sidewalls so that it can handle heavy loads. It is created specifically for trailers. It's not intended for use on other vehicles. It is a radial tire, which means it's constructed with double steel belts and double polyester cords for nice, long life. The tire is bank tested to ensure that the rubber holds up overtime. And it uses a nylon tread firming belt overlay to help prevent tread separation. The tire size, which will be stamped on the sidewall. 5.30 R12. The R means that it is a radial tire. The section width is gonna be right at 5.4 inch. Overall diameter from the bottom to the top when it's inflated, it's 21.6 inches. The tire capacity, this is a load range C tire, which means it's a six ply rated tire. Has a maximum load capacity of 1050 pounds at 80 PSI. And the trailer tires are now coming through with a speed rating that they stamp on them. And on this one it's pretty small, but you can see it, right where the load range is, right above the load range, it'll say 81 miles per hour. So the speed rating on this is 81 miles per hour. The assembly, this whole tire and wheel assembly meets the DOT, Department of Transportation specifications, and it does exceed the Federal Motor Vehicle Safety Standards. This does also come with a two year platinum plus warranty, which will include emergency tire change service and other benefits. But that should do it for a look at this Taskmaster 530 R12 Radial Trailer Tire in a Load Range C, got it on this 12 inch Vesper Silver Modular Steel Trailer Wheel.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Exactly what I needed at a fair price and on time. They had the same wheel tire combo that I'd ordered a couple years ago which is great.
Nice Wheel and tire combo. They look really nice on my utility trailer. Shipping was quick.
Etrailer.com delivered radial trailer tires FAST.
Delivered to my door, accurate description, fully inflated, ready to put on trailer.
Great shopping experience. Thanks etrailer, and thanks Joshua B for the follow-up.
Bought it for a Spare tire. Tire was made Oct.2024 and I got the wheel/tire May 2026. No worries….. it’s a spare tire.
Great product selection and wonderful customer service. I especially liked the frequent updates on my order status.
On the first trip with these tires and wheels, All wheel weights broke off. Will have to have these balanced again. Tires and wheels are as expected
When the tires arrived, the hubs had a few stretches on them which I assume it from mounting the tires. I installed them and drove around the block. Even though it was a short drive, they seemed to be a much better upgrade than the bias ply tires I had on the trailer.
I also should add that I bought these because of the highway rating as I will be hauling my motorcycle to NY this summer.
UPS driver put the tire box at my back gate and was very kind to do so. I’ve ordered 5 new tire/rims for an Alaska trip and and a spare for my cargo trailer in the past. This tire will be a spare on my new trailer.
The 2 Provider Tires on Vespar rims are in excellent condition, mounted good and look in excellent condition.
They both arrived on time without damage, and customer service people were taking care of me by being upfront honest and respectfull.
Good job everyone at etrailer!
Excellent looking wheels and tires! The wheels are flawless - no scratches or chips.
I put these on a small utility trailer that I expanded for hauling my kayak and jon boat. The gross weight is very light so I reduced my tire pressure to about 75psi and took the trailer for its maiden test drive this past weekend. Handles great in town. It did 75-80mph on the highway no problem.
Many thanks to Sarah S for her assistance with my order. I could not be happier right now.
Side note, I also installed the Counteract Balancing beads (CA68VR).
The tires are over 2 years old (DOT 3723), on 1/2026. I’ll see how they hold up. GO ><>*
Great service and excellent communication will buy. From these guys again
The tires were shipped faster than I thought. I just got here and are about to go on my trailer
Good quality, fast free shipping, prompt delivery. Very happy
Tires came as promised. I have not installed them as of yet, but i really like the look. They should look great on my restored 1994 Starcraft popup. Can't wait to get it on the road again. Hopefully the end of July.
Light, sturdy feeling, perfect pressure straight out of the box. Honestly this was my first time ordering any kind of tire online so i was a bit paranoid. But the vehicle selector narrowed down the search to this beauty. Fits like a glove on my old 2005 jayco jay series. while its too early for me to rate its longevity, i find the product feel reassuring.
Do you have a question about this Trailer Tires and Wheel?
Info for this part was:
At etrailer 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.
James D.
6/12/2026
Thanks for the review William! We're glad the tires arrived as promised and that you're happy with how they look. A restored '94 Starcraft sounds like a fun project, we'd love to see it when you get it on the road. Hope the installation goes smoothly and we appreciate you choosing etrailer!