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Taskmaster 4.80-12 Bias Trailer Tire - Load Range C

Taskmaster 4.80-12 Bias Trailer Tire - Load Range C

Item # TTWSF48012C
Our Price: $60.83
Trailer Tires and Wheels
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Shipping Weight: 8 lbs
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Bias tire has a ply rating of 6 and a 990-lb maximum load at 90 psi. Constructed of crosscross layers of strong, stiff nylong cords. Great for agricultural and off-road use. Fits 12" wheels. Lowest Prices for the best trailer tires and wheels from Taskmaster. Taskmaster 4.80-12 Bias Trailer Tire - Load Range C part number TTWSF48012C can be ordered online at or call 1-833-496-1390 for expert service.
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Taskmaster Trailer Tires and Wheels - TTWSF48012C

  • Tire Only
  • 12 Inch
  • 4.80-12
  • Load Range C
  • Bias Ply Tire
  • M - 81 mph
  • Taskmaster

Bias tire has a ply rating of 6 and a 990-lb maximum load at 90 psi. Constructed of crosscross layers of strong, stiff nylong cords. Great for agricultural and off-road use. Fits 12" wheels.


  • Bias ply tire is great for agricultural and off-road use
  • Stiffer sidewalls allow entire tire to flex easily
    • Constructed with crisscross layers of strong nylon cords
    • Provides a smooth ride on uneven surfaces
  • Tread depth bars offer a quick visual indicator of tread wear
  • Meets DOT specifications and exceeds FMVSS


  • Fits 12" x 4" rims
  • Tire size: 4.80-12
    • Section width: 4.75"
    • Outer diameter (when inflated): 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

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.

SF48012C Task Master ST480X12 Bias Ply Tire - LR C

Replaces SF480C

Customer Satisfaction Score:

Customer Reviews

Taskmaster 4.80-12 Bias Trailer Tire - Load Range C - TTWSF48012C

Average Customer Rating:  4.5 out of 5 stars   (97 Customer Reviews)

Bias tire has a ply rating of 6 and a 990-lb maximum load at 90 psi. Constructed of crosscross layers of strong, stiff nylong cords. Great for agricultural and off-road use. Fits 12" wheels.


All 4 taskmaster trailer tires (2 from etrailer .com, and 2 replacements directly from the manufacturer) all have cracking on the sidewalls of the tires and cracking /separation where the tread meets the sidewall with only 20 miles on the tires, on a small utility trailer with only a walk behind snowblower on the trailer.. I am out the cost of 2 tires, plus mounting and unmounting costs totaling $50. will not refund because it is now just past the 60 day return window with all this BS.


Right size and rated for 81 mph (printed on tire). I would have given higher rating except that these tires are so smushed flat that they were hard for the tire shop to get seated on the rim and sealed. Other reviews have said the same thing.


I have had these tires on a P/U camper for a year now and I am very satisfied. I have pulled it to Co. from Tx. and have had now issues with them. I like the fact that they are rated at 81MPH and can be pulled safely at 70 to 75 MPH. When purchasing tires it is important that you find a tire to that will preform. You can find tires in this size cheaper at big box stores but you will not have the peace of mind you have with this tire from etrailer. This is the second set of tires that I purchased from etrailer in this load range and speed range. I use my P/U camper a lot. I will continue to purchase from etrailer. I have had no problems with delivery or costumer service. They say what they do and do what they say.

This tire has performed as advertised. Great tire!! When it comes time to replace I will be using the same tire from etrailer. Customer service is the best. Thank you etrailer. P.S. if you use this tire keep the recommended air pressure 90Psi.
Mike - 09/29/2021


Overall I am happy with my purchase of these tires. I wanted the higher highway speed rating (M 81 mph) and that is what I got. I rate my satisfaction at 85%. Happy with cost. Happy with quicknest of filling my order and arrival time of the tires. A little less than 100% happy because the tires are already a year old (DOT 2619). That's one less year that the comfort zone of a six year tire. I understand LIFO and I can live with it.


At the time of this review the tires have about 900 miles on them. Most of the miles in the 60-70mph range. Purchased these tires for the 81mph speed rating. The 90psi air pressure usually has to be checked and some air added every few weeks.
Over all the tires seem to be very good tires thus far. The previous tires had 7+ years
of service. I am hoping these tires do as well.

Tires are holding up well. I am very satisfied with the tread wear. Tires are smooth at all speeds.
Dave i - 08/14/2019


I haven’t even opened the box yet. But let me tell you WHY I purchased these tires. I’ve had two blowouts on my golf cart trailer. Yes, I run it fast. Usually around 70-75 mph. And these tires are rated at over 81 mph! I’ve got to give them a try.

Great after 1 Year. Actually, I’ve not given much thought to my trailer tires since I put these on! I guess that says it all.
Donald - 11/01/2020


After one year of use I probably have 3000 miles on these jet ski trailer tires. They were the highest speed rated Tire of the size I could find.

They have done well.

I remember being a little freaked out when I got them in the mail because three of them fit in a box the size of a small slim TV and they look like bicycle tires uninflated. spent an additional $40 having them professionally mounted at a local Goodyear dealer.


These tires have been great. I ordered them for a light weight trailer that I purchased and modified to carry my kayak. I belong to a kayaking group and we go all over Florida to kayak and being able to pull my kayak versus carrying it on the top of my car has been a body ache saver. I would highly recommend getting these tires.


Got these tires for their 81 MPH rating. After about 2000 miles a large patch of rubber separated from the tire. Two weeks later the tire on the other side did the same thing. The Taskmaster rep said I must have hit something that cut the tread but I think the tread separated from the inner ply. Two tires in two weeks with the same problem seems like more than coincidence. Luckily I noticed both holes before they blew out. The third tire of the set I bought from you will never be on the ground. I won't even trust it as a spare.


These tires are for my small utility trailer to replace the original stock tires. Order process was smooth, shipping was quick and packing was great. Will definitely get my next set of tires/wheels from here. Great service.


I called etrailer and ordering these tires was fast and simple. I chose these tires as they have a higher speed rating than other brands of the same size. All three Tires arrived in a large box and I took them down to have them mounted as these size tires are very difficult to mount without an Air Blast nozzle. I watched the guys at the tire shop try to inflate them like a normal Tire and they were having a hard time they broke out a large hose with some type of attachment and held it against the bead and blew air into the tire and then they beaded up. I have not put many miles on the tires so I cannot speak as to the quality and longevity. I was expecting tires made recently however the DOT numbers on the tire indicated they were 2016 so these were two years old already upon arrival.


Seems like a good product. Came way over packaged but arrived in good shape. I gave 4 stars because its hard to rate something that I haven't had time to truly test out. In 3 to 5 years I can give a full honest review of the tires. Until then u can only give 4 stars.


Very good value. Broke Springs on a small center console tender trailer, thought OH boy how am I gonna find parts for this. Searched on-line. Found etrailer and BAM = problem solved. Got springs, shackles, bolts, even an entire spare and tire for a couple hundred bucks and THEY ALL FIT and at least as good quality as the thing was build with. Excellent and pretty quick shipping and delivery for heavy stuff.


The only complaint that I have, is how the tires were packaged and shipped, leaving the tires hard to get the bead to seal to the wheel.


Love etrailer! AFFORDABLE PRICES, quality merchandise. Fast shipping. Basically have everything you need and more. A great place to shop.


Customer service was awesome. I can say enough great things. Cathy, my representative, made the purchasing process extremely easy. I even messed up the first order and she sent the new tires quickly. Etrailer is great


Purchesed as a replacement tire. Works and fits great. Would recommend this product to others.

Great product. Have not had any problems with it.
Chris B - 12/19/2017


So far I’ve been very happy with this set of tires. I purchased them because of the higher speed rating over similar sized tires. They have about 1500 miles on them so far and seem to be wearing well.


These tires have not gotten much use in the past year. That said they were used on long trips 600 + miles and preformed very well at highway speeds 70-75 mph with no problems.


The tires look to be very High Quality and should do a excellent job in handling the load needs of my trailer.


Pay the extra and get the Taskmaster radials of the same size.


Price was excellent. Product was as advertised and shipping was VERY fast. All in all an excellent purchase.


Great tire. Runs smooth and true, NO problems of any type.


Just what I ordered. Hopefully I will not need the spare soon.


Fast shipping tires where as expected

Show More Reviews

See what our Experts say about this Taskmaster Trailer Tires and Wheels

  • Does Speed Rating M on Trailer Tire Always Mean 81 MPH?
    The speed rating M on trailer tires like the Taskmaster 4.80-12 Bias Trailer Tire - Load Range C # TTWSF48012C you were looking at will always mean 81MPH as the speed ratings are standardized. I included a video of the # TTWSF48012C for you to take a look at.
    view full answer...
  • Troubleshooting Tire Going Flat on Passenger Side of Utility Trailer
    Based on what you are describing, it doesn't sound like you have a problem with the capacity of your tire. Since it is only on the one side and continues to go flat, I would start by checking for a leak. It is also possible that you have a bent spindle, or damage to the wheel which could cause this issue. Also, make sure when you inflate the tires that you are using the max psi. If you don't know what you are looking for, I recommend taking the trailer to a professional to let them check. I...
    view full answer...
  • 12 Inch Tire With A Speed Rating Higher Than 65 MPH
    The Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C does have a speed rating of 81 mph. With this tire you won't have to worry about being stuck at 65 mph.
    view full answer...
  • Tire Upgrade for Small Utility Trailer with 4.80-12 Tires that Are only Rated for 55 MPH
    I checked out the trailer you mentioned and it has the tire size of 4.80-12 which we have the Taskmaster tire part # TTWSF48012C in that size that has an 81 mph speed rating. This would be the best solution available for increasing the speed rating of your trailer. Trailer weight capacity is a combination of the frame strength, axle strength, brake strength, tire strength, coupler etc.
    view full answer...
  • Replacement Trailer Tire Recommendation for Size 4.80-12 with Higher Speed Rating
    The Taskmaster Tire part # TTWSF48012C is a 4.80-12 size tire that has an 81 mph speed rating so it would be a great option for you.
    view full answer...
  • Can Taskmaster Tire with M Speed Rating Go Over Standard 65 MPH Speed Rating
    The M rating on the Taskmaster # TTWSF48012C tire means that it is rated for speeds up to 81 miles per hour. This means the tire can exceed the traditional 65 mph speed rating.
    view full answer...
  • Trailer Tire Recommendation for Size 4.80-12 that Can do Highway Speeds
    I do have a great solution for you, but if you exceed the speed rating of a trailer tire it will get too hot and will very easily fail. I can't safely recommend you exceed the speed rating of your tire by 10 mph for 200 miles. Instead the tire part # TTWSF48012C is a 4.80-/4.00-12 tire like you need but with an 81 mph speed rating. This will easily let you cruise at 70 mph.
    view full answer...
  • Trailer Tire in Size 4.80-12 that is Rated for 75 MPH
    In the tire size of 4.80-12 we have one tire that is rated for up to 81 mph, part # TTWSF48012C. Most are only rated for 65 and we wouldn't be able to recommend you exceeding that. What you'd want to do is check the sidewall of the tire for the speed rating. If you need to go 75 and your tire says lower you'd have to get the part # TTWSF48012C.
    view full answer...
  • Trailer Tire Size Smaller in Diameter than ST145R12 that Fits Same Wheel Size
    Sounds like you are looking for a smaller in diameter tire size than your ST145R12 that fits the same rim size. For that we have the 4.80-12 which is .7 of an inch smaller in diameter than what you currently have and will fit your same rim width of 4 inches. For that we have the part # TTWSF48012C which also happens to have a higher speed rating than most trailer tires at 81 mph.
    view full answer...
  • Trailer Tire Recommendation for Size 4.80-12 that Can Handle Highway Speeds
    We have the Taskmaster tire part # TTWSF48012C in that size that has an 81 mph speed rating. This would be the best solution available for increasing the speed rating of your trailer. This tire would also have no problem with the weight of your trailer either as it has a capacity of 990 lbs at 90 psi.
    view full answer...
  • Recommended Replacement Trailer Tires Size 4.80-12 on Boat Trailer
    It is recommended to replace both tires on the same axle at the same time. This is due to wear patterns on the tires. You should always use tires of the same size, load range, and construction on a trailer. If you use tires that don't match, you could experience problems of overloading and overheating, which can lead to tire failure. I do not recommend using the size 5.30-12 tire on your trailer. I do not recommend sizing up from the 4.80-12 size tires currently on your trailer. It...
    view full answer...
  • Would the Taskmaster Tires TTWSF48012C Have Enough Tire Capacity for a 1,500 lb Trailer
    Based on tire capacity alone, yes with two of the # TTWSF48012C you would have 1,800 lbs of tire capacity so a 1,500 lb trailer would be no problem at all. You will need to make sure the tires are inflated to their 90 psi max capacity to ensure that you get the full capacity. You will need to be sure your trailer has enough capacity as well. Their should be a plate up near the coupler that states the overall capacities.
    view full answer...
  • Are 4.80-12 Size Tires with a 990 lb Weight Rating Enough for a 1,000 lb Trailer
    I believe you mean 4.80-12 size tires like the Taskmaster 4.80-12 Bias Trailer Tire - Load Range C (990 lbs at 90 psi) # TTWSF48012C which also have a speed rating of 81 mph. Since you add the carrying capacity of each tire for your system together this means that 2 of these tires can handle up to 1,980 lbs which is well over what your camper weighs so you are good to go!
    view full answer...
  • Is 90 PSI Rating for 4.80-12 Size Tire Too High
    If the sidewall of your 4.80-12 size tires say 90 psi then that is what you want them to be when the tires are cold (after they have been sitting for a while like overnight). This is the psi rating that the manufacturer has tested and approved to be safe with the weight rating that is listed on the tire. The psi will actually increase some during travel due to heat build up but the manufacturer has already accounted for this. The 90 psi rating is actually normal for that size tire. For...
    view full answer...
  • Cause for Failure of 4.80-12 Trailer Tires That Are Not Overloaded or Incorrectly Inflated
    Heat is the cause for most trailer tire failures, and that heat can come from any of three causes: incorrect inflation pressure (high or low), overloading the tire beyond its weight capacity or by driving too fast for the tire. All three conditions cause excess heat and can lead to failure. In your tire size 4.80-12 we have only Load Range B and Load Range C tires and tire/wheel combinations. Both our tires in this size and our tires/wheels with your 4-on-4 bolt patterns can be seen on...
    view full answer...
  • Tire Pressure to Run in Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C
    The max tire pressure on the tire is what you should follow. If you have the Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C like it sounds like you have then you'd need to run the pressure of 90 psi when the tires are cold. Running a lower pressure will reduce capacity and cause heat to build up. The max capacity of these tires are 990 pounds so you should be fine. Most tire failures are caused by either too low of tire pressure, exceeding the max weight, or exceeding the max speed....
    view full answer...
  • Can Load Range B Tires be Upgraded to Load Range C
    You can absolutely upgrade your trailer's tires to load range C. We carry the Taskmaster # TTWSF48012C that is a 4.80-12 C tire. The maximum load is 990 pounds at 90 psi and the maximum speed rating is 81 mph.
    view full answer...
  • Higher Speed Rating Tire Recommendation for Size 4.80-12
    Not all trailer tires have the same speed ratings. Most are only rated for 65 but of the brands we carry Taskmaster tires are rated for 81 and Lionshead 75 mph. For your tire size of 4.80-12 we only have one tire with a higher speed rating and that is a Taskmaster # TTWSF48012C which is rated for 81 mph.
    view full answer...
    Image 1 for
  • Trailer Tire Recommendation for Size 4.80-12
    The size 4.80-12 is a standard trailer tire size and is one we offer. For that we have the part # TTWSF48012C which is a bias ply tire in a Load Range of C that has a capacity of 990-lb maximum load at 90 psi. You could then choose a wheel like the Dexstar Steel Spoke Trailer Wheel - 12" x 4" Rim - 4 on 4 - White Powder Coat Item # AM20122 and have it mounted at a local shop.
    view full answer...
  • Replacement 4.80-12 Bias Trailer Tire for the Taskmaster Tire/Wheel Combo # TTWAA12WS
    Yes, the Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C is a direct replacement for the tire that comes on the Taskmaster Tire/Wheel Combo # TTWAA12WS. An auto tire shop can easily remove the old tire and install the new one as they should have a tire mounting machine.
    view full answer...
  • Does Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C Need Full PSI With Empty Trailer
    This is a really good question, but yes even when your trailer is empty you'd need to run the Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C at it's max psi rating of 90 psi. Unlike car tires where you can lower the PSI with trailer tires they have to be at their max number all the time to ensure you get the full speed rating without risk over heating up and failing.
    view full answer...
  • 4.80-12 Trailer Tires With A Speed Rating Over 70MPH
    The Taskmaster 4.80-12 Bias Trailer Tire # TTWSF48012C is our most economical tire that has a speed rating above 70mph. It is rated for up to 81mph and has a class C load rating of 990lbs at 90psi. You may benefit from the increased tire life you get with the Taskmaster 4.80R12 Radial Trailer Tire # TT48012C. It has all the same speed and weight ratings but the radial construction will have less rolling resistance and heat buildup, which leads to a longer tread life and improved steering...
    view full answer...
  • What is the Difference Between a Radial and Bias Trailer Tire
    The difference between the Taskmaster # TTWSF48012C and the Taskmaster # TT48012C is that the # TTWSF48012C is a bias tire where the # TT48012C is a radial tire. I recommend using the Taskmaster # TT48012C because the radial tires will perform better when towing on highways and over long distances, in addition to wearing more evenly. Generally radial tires are going to flex more, which provide greater road contact and more even tire wear and will perform better on highway driving. Bias...
    view full answer...
  • Replacement 4.80-12 Tubeless Trailer Tire
    Yes, the Taskmaster 4.80-12 Trailer Tire will be an excellent option for you. If you will be traveling mostly on the highway then I recommend part # TT48012C as it has a radial ply but if you will be traveling mostly off road then I recommend part # TTWSF48012C as it has a bias ply. They both have a load range C rating (990 lbs per tire), 81 mph speed rating, and tubeless construction. I have attached review videos for you as well.
    view full answer...

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