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Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel - 5 on 4-1/2 - Load Range C

Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel - 5 on 4-1/2 - Load Range C

Item # TTWA12SM
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Our Price: $116.42
Trailer Tires and Wheels
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Shipping Weight: 19 lbs
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Trailer Tires and Wheels TTWA12SM - Standard Rust Resistance - Taskmaster
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Bias tire has ply rating of 6 and 990-lb maximum load at 90 psi. The 12" diameter x 4" wide steel trailer wheel has a 5 on 4-1/2 bolt pattern. 3-Step powder coat finish provides rust resistance. Improved torque retention secures wheel. Lowest Prices for the best trailer tires and wheels from Taskmaster. Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel - 5 on 4-1/2 - Load Range C part number TTWA12SM can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (574)
  • Q & A (16)
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  • Why etrailer?

Taskmaster Trailer Tires and Wheels - TTWA12SM

  • Tire with Wheel
  • 12 Inch
  • 5 on 4-1/2 Inch
  • 4.80-12
  • Load Range C
  • Steel Wheels - Powder Coat
  • Bias Ply Tire
  • Taskmaster
  • Standard Rust Resistance

Bias tire has ply rating of 6 and 990-lb maximum load at 90 psi. The 12" diameter x 4" wide steel trailer wheel has a 5 on 4-1/2 bolt pattern. 3-Step powder coat finish provides rust resistance. Improved torque retention secures wheel.


  • Tire-and-wheel assembly is ideal for stock trailers, utility trailers, and campers
  • Steel wheel with modular design is sturdy and corrosion resistant
    • 3-Step finishing process includes phosphate zinc bath, e-coat primer, and silver powder coat on outboard side
    • Inboard side is lightly e-coated to reduce friction and provide rust resistance with less flaking
  • Improved torque retention (ITR) technology helps to keep wheel securely in place on your trailer
    • Uncoated stud holes are beveled to offer better clamp force retention
  • Bias ply tire is constructed with strong nylon cords
    • Great for off-road and agricultural use
    • Tread depth bars offer a quick visual indicator of tread wear
  • Assembly meets DOT specifications and exceeds FMVSS


  • Rim dimensions: 12" diameter x 4" wide
  • Bolt pattern: 5 on 4-1/2"
  • Wheel bolt size: 1/2"-20
  • Wheel capacity: 1,250 lbs
  • Pilot diameter: 2.95"
  • Offset: 0
  • Tire size: 4.80-12
    • Section width: 4.75"
    • Outer diameter: 20.5"
  • Tire capacity:
    • Load range: C
    • Ply rating: 6
    • Maximum load: 990 lbs at 90 psi
  • Maximum speed: 81 mph (speed rating M)
  • 2-Year limited warranty on tire and wheel

Corrosion-Resistant Finish

The steel wheel goes through a 3-step finishing process that makes it both attractive and corrosion resistant. The wheel is first submerged in a zinc phosphate bath to ensure good paint adhesion. It is then e-coated with an acrylic primer base and the outboard side is finished with baked-on DuPont powder paint. The light e-coat on the inboard side of the wheel reduces friction between the wheel and your hub and eliminates the flaking that can occur with a heavily applied paint finish.

Improved Torque Retention Technology

Beveled Stud Holes Front and Back

The automotive-rated center disc is raised and the stud holes are beveled and uncoated for better clamp force retention. This technology helps the wheel stay tight against your hub without the need for constant retightening.

Bias Tires vs. Radial Tires

Bias vs. radial tire graphic

Bias ply tires are designed for off-road or agricultural applications. They are built with thick, durable nylon cords that are positioned at a 30- to 45-degree angle to the direction of travel. The layers alternate in a crisscross pattern, making the sidewalls stiffer so that the entire tire is able to flex easily. As a result, the tire provides a smooth ride and improved handling when trailering on uneven surfaces.

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.

Bolt Pattern - Odd

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.)

Bolt Pattern - Even

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.)

Bolt Pattern - 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.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

AS12B45SMHP Task Master ST480X12 Bias Tire with Silver Modular Rim - 5 on 4-1/2 - LR C

Customer Reviews

Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel - 5 on 4-1/2 - Load Range C - TTWA12SM

Average Customer Rating:  4.9 out of 5 stars   (574 Customer Reviews)

Bias tire has ply rating of 6 and 990-lb maximum load at 90 psi. The 12" diameter x 4" wide steel trailer wheel has a 5 on 4-1/2 bolt pattern. 3-Step powder coat finish provides rust resistance. Improved torque retention secures wheel.


So far so good. Bought these tires for the 81mph rating. Fast shipping. Thank you etrailer 884756


The price was right and the shipping was fast. Got the tires and rims on my trailer and they were awesome. Thanks 884202


A quality product at reasonable cost. The on-line ordering/website and shipping/tracking are excellent. This is the second purchase I have made with etrailer.com - will keep coming back. 869013


I was so impressed with these tires and rims! Not only were the rims galvanized but also painted and very good quality! Made my trailer look and drive so much better! They have a great website and very fast shipping! 864497


The video on this product was very informative. It was exactly what I was looking for. 855149


Writing the review 12 months after installing. If I remember I have some issues installing, had to grind off some plastic that was in the way, may have been formed incorrectly. No issues after installed looks and works great. 840116


Taskmaster Silver Mod Bias Ply Trailer Tires and Wheel Its been a year. The tires and wheels needed to be replaced on my SEA DOO trailer. I ordered from E Trailer as usually A great price and product. They arrived i n a timely manner. I just returned from a week in the Adirondack Mountains with the SEA DOO. The tires and wheels are going strong and still look new. The rubber nubs are still on the rubber. 831783


I got them really fast and they were as advertised and look great on my trailer 808845


So far so good ride smooth 782959


It's a tire and it fits. No issues. 752682


Great product and price! Best customer service out there!! 745827


Ordered 3 trailer tires to replace the worn ones and spare on my motorcycle trailer. Ordering was quick and painless and with standard shipping received my order in 3 business days. One of the tires was defective and wouldn’t hold air. etrailer was great in getting a return label and sending out a new tire right away. Their customer service and handling of issue was great. I would highly recommend them for your towing and trailer needs. Great Pricing, quick shipping, and excellent customer service. What more can you ask for in a company! 682896


good product, fabulous customer service ! 669815


ordering went fine, product came in scratched from machine that mounts the tire to the rim. would order locally next time. would not use again. 667766


I bought these tires for my motorcycle trailer. Etrailer got them to me in plenty of time for my trip. They look great and I like the fact that they are rated for higher speed. The lights on the trailer I bought from etrailer about a year ago. I think they look great and they have worked without any issues. 657769

We took a 2000 mile trip after I put on these tires. We had temperatures in the high 90s to low 100s. These tires performed without any issues.I would buy them again.
John - 06/16/2020



Ordering was easy, my items shipped same day and was delivered via FREE shipping in two days. THANKS! 642631


Great value, awesome customer service, and they look great on my boat trailer 617436

The wheels want tires are great. Ill get years of use out of them
Dave Y - 04/08/2020



Awesome wheels and tires! Very fast shipping received them a few days from ordering. Excellent packaging. I highly recommend ordering trailer tires and wheels from here! 605449


Have had this combo for a year now and have met my expectations, ordered these for my aluminum boat trailer and they have been great. 588551


Took these tires from Orlando to Denver and back. They were great at 70 MPH. I still have them on the trailer for frequent runs between Orlando and my lake place in the Ocala National Forrest which is 135 miles round trip. They're holding up very well. 555142

Ive used the trailer at least a dozen times this year as Im refurbishing our lake house and the tires are still going strong!
Robert - 08/18/2019



It's just a wheel and tire, but their service is always excellent 526851


Quality appears excellent, fast shippin g. 523266


I've dealt with these folks in the past and can't say enough about their company. Always helpful and provide lightning fast shipping. Definitely a 5 star company! 510851


Exactly as advertised and at my door 2 days after ordering. 483641


Hard to complain - it's more than I wanted. I was looking for a 4-ply tire on this wheel, but etrailer did not offer that. So, I had to purchase 6-ply. Yes, it's "better", but presumably a waste of money. It shipped super fast and in good condition. So, in the end, all is well. 441651

Show More Reviews

Ask the Experts about this Taskmaster Trailer Tires and Wheels

  • High Speed Rated Taskmaster 4.80R12 Radial Trailer Tire
    I believe you are asking about a Taskmaster 4.80-12 Tire like part # TTWA12SM but that is radial with a high speed rating. I recommend the Taskmaster 4.80R12 Radial Trailer Tire w/ 12" Silver Mod Wheel part # AT12R45SM which is a radial load range C tire with a 81 MPH speed rating on a 5 on 4-1/2 silver mod wheel. I have attached a video for your reference. We also carry the Taskmaster 4.80R12 Radial Trailer Tire w/ 12" White Mod Wheel part # AT12R45WM which is the same but on a...
    view full answer...
  • Importance of Trailer Wheel Pilot Hole Diameter
    The importance of matching a wheel's pilot hole diameter to the part of the hub that fits through it depends on the type of wheel. A hub-centric wheel uses the pilot hole to center the wheel on the hub and also to bear some of the total weight load (the rest going on the wheel bolts). Hub-centric wheels typically use wheel bolts rather than lug nuts to attach to the hub. If your wheels are hub-centric, you would want new wheels with the same pilot hole diameter as your current wheels because...
    view full answer...
  • Center Cap Availability for Taskmaster 4.80-12 Tire and Wheel Combo
    I do have a solution for you but unfortunately the Taskmaster wheel that comes with the combo # TTWA12SM you are looking at has a pilot diameter of 2.95" for which there are no covers. If you are wanting a combo that does have a chrome cap available then we have the Kenda 4.80-12 Load Range C tire that comes with a Galvanized Wheel # AM30670 or an Aluminum Wheel # AM30679 and you can use the Chrome Cap # 319EZ. Aside from that you will need the Taskmaster 4.80-12 Bias Trailer Tire...
    view full answer...
  • Trailer Wheel Recommendation for Tritron 2017 Jet Ski Trailer
    The closest option we have to what your trailer has would be the # TTWA12SM that you referenced. We don't have any gray colored modular wheels in this size that have 8 modular holes. Only this style that has 10. Other option would be the part # AM30670 which has 8 triangular shaped holes in the wheel.
    view full answer...
  • High Speed Replacement 4.80-12 Replacement Tire and Wheel With 5 on 4-1/2 Bolt Pattern
    I strongly recommend going with the Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel # TTWA12SM because these tires are rated for 81 mph. The wheels do have a 5 on 4-1/2" bolt pattern like you need and a 990 lb maximum capacity. This will very much be your best option for the high-speed combo you were wanting. I have added a link to a video review of this tire and wheel for you to take a look at.
    view full answer...
  • Replacement Tires for Utility Trailer with 185/65R14 Tires
    The Taskmaster ST205/75R14 Radial Trailer Tire - Load Range C # TR20514 is the closest tire size we have to your 185/65r14 tires. These will have an outer diameter of 26.14 inches instead of your current 23.5 inches and the width will be 8 inches versus your current 7.3 inches. If you have the extra clearance for those differences and account for 4 or more inches of suspension travel between the top of the tire and your fender or trailer floor. I don't recommend the # TTWA12SM you...
    view full answer...
  • Is Valve Stem Included w/Taskmaster 4.80-12 Trailer Tire on 12" Silver Mod Wheel - 5 on 4-1/2
    Taskmaster trailer tire and wheel combo # TTWA12SM comes already mounted so that does include the valve stem which is appropriately rated to handle the 90 psi that the tire is rated for. I have included a link to a video review of this tire and wheel for you.
    view full answer...
  • Tires to Replace 185/65-14 Tires on Older Camper
    You want to see an absolute minimum of 3 inches of clearance between the top of the tire and the underside of the wheel well/fender. Your current tires are 23.5 inches in diameter, and you'll need something as close as possible to that size for a spare for emergency use. It's not a good idea to mix tire sizes, so you'll be best off going with 3 identical size tire/ wheels. Also, trailer tires have stronger sidewalls and are better suited for trailer use than passenger car tires. The...
    view full answer...
  • Tire Used with Taskmaster 4.80-12 Bias Tire and Wheel Combo # TTWA12SM
    Yes, the Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel # TTWA12SM features the Taskmaster 4.80-12 Bias Tire # TTWSF48012C. This means that this tire and wheel combo has an 81 mph speed rating (Speed Rating M) like you mentioned and a maximum load of 990 pounds at 90 psi. I have attached a short video demonstration on this tire and wheel that you can also check out.
    view full answer...
  • Boat Trailer Tires Wearing Faster with Bigger Motor Installed on Boat
    From what you are describing I bet your tires are wearing quicker because of the extra weight. Since 4.80-12 tires like part # TTWA12SM have a max rating of 990 lbs are 90 psi if you are exceeding this weight limit or you previously had hardly any weight on your trailer this would cause the tires to wear quickly. With the weight rating being 990 lbs that means per axle the most weight your tires can handle is 1,980 lbs (provided that your tires do have that 990 lb rating). I recommend...
    view full answer...
  • Replacement Wheel and Tire Recommendation for Size 4.80-12 with Pilot Diameter 2.5 inch
    Thanks for the pictures of your wheels and tires! Based on that I can tell that your wheels are lug-centric which means they center on to the hub via the lug nuts and not the center hole of the wheel. So you just need to have a pilot diamter that will fit over the bore of your hub and you'd be set. The part # TTWA12SM that you referenced has a pilot diameter of 2.95 inches and will work great.
    view full answer...
  • Lightest Tire and Wheel Combo for 12 Inch Trailer Wheel
    The Aluminum Hi-Spec Series 04 Star Mag Trailer Wheel - 12" x 4" Rim - 5 on 4-1/2 # AM20163 has a shipping weight of just 10 lbs. The Steel Mini Mod Trailer Wheel - 12" x 4" Rim - 5 on 4-1/2 - Chrome # AM20152 will be lighter at just 9 lbs and will be the lightest wheel we currently carry. For your tire, the Kenda K353 Bias Trailer Tire - 4.80-12 - Load Range B # AM10060 weighs just 9 lbs but will only allow speeds up to 65 mph. If you want to go 70 mph, then I recommend bumping up...
    view full answer...
  • Size 4.80-12 Tire/Rim Recommendations for Pop-Up Camper
    The main issue people run into when switching to larger tires is that there isn't enough clearance, but if you have been using the larger tires for years without a problem, then it sounds like the size isn't an issue for your trailer. The next factor you'll want to consider when buying new tires is the bolt pattern of your wheel. Our 4.80-12 tires come in a 4 on 4” bolt pattern (4 lugs) and a 5 on 4-1/2” bolt pattern (5 lugs). I've attached an article on how to determine your bolt pattern....
    view full answer...
  • Recommended Wheels and Tires for a 2004 Shorelandr PWC 1200 Trailer
    For optimal performance and as a general rule, you should stick with the trailer manufacturer's recommended size and specs when replacing tires and wheels. However, moving from a B to C load range shouldn't create any significant performance issues. For a quality cost effective tire/wheel combo for your trailer, I recommend one of the following from Taskmaster depending on the wheel style you prefer. # TTWAS12B45WSHP - Taskmaster 4.80-12 Bias Trailer Tire with 12" White Spoke Wheel...
    view full answer...
  • Spare Tire and Hub for 2016 Load Rite PWC Trailer
    We can help you with a spare tire/wheel and spare hub for your 2016 Load Rite PWC trailer. Our range of tire/wheel items in your 4.80-12 tire size is shown on the linked page. We have both radial and bias ply tire types, both 4-on-4 and 5-on-4-1/2 wheel bolt patterns and two weight load ranges, B and C. You will definitely want to match the characteristics of the spare to your primary tires so have a look at the sidewall to confirm the tire type (bias ply or radial), Load Range and...
    view full answer...
  • Why Does Trailer Wheel Measure 13" With 4.80-12 Tire
    In order to measure a trailer wheel, you'll do so at the bead seat not the edge of the wheel. The lip of the wheel adds around 1/2" so that would explain the 1" difference between the actual wheel diameter which is 12" and you measuring 13". If you are just looking to replace the tires then I recommend the Taskmaster 4.80R12 Radial Trailer Tire part # TT48012C but if you want a new wheel/tire then I recommend the Taskmaster 4.80-12 Bias Trailer Tire with 12" Silver Mod Wheel part # TTWA12SM.
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Edited by:
Lindsey S
Installed by:
Jeff D
Written by:
Tammy D
Updated by:
Mary E
Updated by:
Sarah W
Updated by:
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Updated by:
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