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When you’re towing gear or cargo, you need a wheel that can handle the weight without hesitation. The Aluminum Trinity Series wheel from Taskmaster is rated for 1,750 lbs and measures 13" x 4-1/2". It uses a 5 on 4-1/2" bolt pattern with a 3.19" pilot diameter and 1/2"-20 wheel bolts. That kind of strength gives you confidence in your setup every time you roll out.
Steel wheels can corrode fast, especially after a few seasons in the elements. This one’s aluminum—so it’s durable, lightweight, and rustproof right from the start. The glossy enamel coating resists corrosion even further, keeping the wheel looking sharp while cutting down on maintenance.
If you like your trailer setup to look as good as it performs, this wheel makes it happen. The Trinity Series design has five bold forks finished in glossy black with machined silver accents. It’s a sleek, modern style that instantly upgrades the look of any setup and stays eye-catching season after season.
The details are all handled. This wheel meets SAE J1204 standards for strength and quality and comes complete with a center cap and valve stem included. It’s built to be dependable from day one, backed by a 5-year warranty against structural defects so you can count on it for the long haul.
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 13 inch by four and a half inch Trinity Series Black Machined Aluminum Trailer Wheel. Now this is an aluminum wheel. It's very durable, lightweight, and rust-proof. We mentioned it's a Trinity series, which means it's the five fork design in the black finish. Has a machine silver finish on the outer edge of the spokes to provide a nice, bold, sleek look.
And also around the outer lip. The glossy black enamel coating resists corrosion. If you notice the center cap in it, it is included. And basically what's nice with the center cap, it installs from the rear here, but also there's a center plug here that you can pop out on the center cap. And what that does is when you pop that out, lets you gain access if you happen to have EZ Lube axles on your trailer, EZ Lube axles will have the grease Zerk fitting on the spindle that allows you to pump grease in without having to remove the wheels and tires.
Cap is included, and then also right down here, if you notice, the valve stem is included, pre-installed. This wheel does meet the SAE J1204 standards. Two dimensions on the wheel, the diameter, which will always be measured inside the inside. So on this wheel, you can see there's your 13 inch diameter. The width is gonna be the same way.
When you measure the width, it's bead seat to bead seat. So inside the inside, four and a half inches. Now the bolt pattern on this wheel is a five on four and a half inch bolt pattern. And if you want to measure that on a wheel, that's an odd number of lugs. What you'll wanna do is pick any hole, let's say this one, and you'll measure direct across to either this hole or this hole.
But the trick is when you measure, it's from the center of the starting hole to the furthest edge of whichever hole you measure to. So on this one, if we measured, it'd be four and a half inches. Means it's a 5 on four and a half inch bolt pattern. Does use a wheel lug size of a half inch by 20. The pilot hole diameter, which is the large hole here that the cap goes through, diameter on this opening is 3.19 inches. And the weight capacity on this wheel is 1,750 pounds. But that should do it for a look at the Taskmaster 13 inch by four and a half inch Trinity Series Black Machine Aluminum Trailer Wheel.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Great packaging and fast delivery
Just what the doctor ordered
Just love them!!!!
Sold wheels. Perfect replacement for my RV
Very nice rims. Added a very good look to my camper. Before and after photos.
Wheel is just what I ordered
Great Customer Service & fast shipping
rims are great quality for the price,
These rims look fantastic! I feel like a got a great deal on a solid product. Super fast shipping, arrived packaged well, in perfect condition, had them out to the local dealership same day to get them mounted and balanced. LOVE it!
The wheels are beautiful!!! E-Trailer is always helpful and very customer friendly in helping find the correct product you need!!!!
Great looking rims with the weight ratings I needed for the new 17.5” Cooper Works RHT2 tires. Great set up for heavy 5th wheel tires. Had them installed at Professional tire shop that spin balanced truck and RV tires. Game changer and a piece of mind for our long term RV travel’s. Heading out on the Route 66 trip with no time line on our adventure.
Thank you Amy J for all your help with my order!
Nice looking wheel, solid quality, arrived in perfect shape !
Great Company to work with.
Nice quality wheel. Machining and paint looked good which can be spotty on aftermarket trailer wheels. Was at my door 2 days from ordering.
Great quality and packaging was very protective. Sharp wheels and really improve the look of a trailer.
Received product in excellent condition. The staff kept me updated on shipping and stock item. Thanks.
These wheels really make the trailer pop and look so much better than the stock wheels. A great product and the service provided by the Etrailer staff was awesome! They helped make the decision easy.
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Gwendolyn Y.
3/11/2025
Those rims look awesome! A definite upgrade from the OEM. When's the next lake weekend?