*Tread pattern & sidewall design may vary from pictures

New Tire

Petlas UN-1 5 Rib

400/60-15.5, 147A8, 16 Ply
  • Season:  All Season
    • Load/Speed: 147A8
  • Speed Rated Up to 25 mph
  • Load Range: 16 Ply

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MSRP $351.75
$293.99 Per Tire
Total for : $0.00
Total for : $0.00
You save  $57.76 (16%)

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Tire Specifications

  • SKU N1521640-99
  • Season All Season
  • Sidewall BSW: Black Side Wall
  • Car Type Tractor
  • Size 400/60-15.5
  • Load Range 16 Ply
  • Brand Petlas
  • Load Index 147
  • Tread Depth 15/32
  • Performance N/A
  • UTQG N/A
  • Treadlife/Warranty N/A
  • Run Flat No
  • Model UN-1 5 Rib
  • Speed Rating Description Speed Rated Up to 25 mph
  • Rim Diameter 15.5
  • Overall Diameter 34.4

Attention! Due to the size of the tires, Packages might be SEPARATED in the courier facility and not be DELIVERED on the SAME DAY, even though we do ship them together. Tracking information can be checked by logging on to the courier website with the master tracking number you will receive via email. For example, you can receive 3 tires in one day and the 4th one the next day or the day after, or one tire in one day and the second one day after. We understand that this is a big inconvenience for our buyers, however, this is ABSOLUTELY out of our control.


Petlas UN-1 5 Rib


  • Versatile terrain traction
  • Upgraded controllability
  • Improved load durability


The Petlas UN-1 5 Rib is an all season tire made for tractors.

The maintained surface contact greatly improves controllability. The tire is able to maintain its surface contact on various fields. This helps boost steering responsiveness and driving stability. It promotes exceptional steering responses and accuracy to the driver’s commands, while the structure is secured against driving pressure. Additionally, the shoulder block pattern manages to increase the tire’s cornering ability by providing extra biting edges. This combination guarantees a secure performance on field terrains.

Excellent various terrain traction is offered with this tire. The wide footprint and its deep grooves enable the tire to enhance soft and loose field applications. The tread elements provide the ratio necessary with their optimized surface contact. Furthermore, the groove placement keeps the footprint clean with its self-cleaning capability. Mud cannot block the surface contact as it is dispersed from the footprint. This results in a secure field terrain performance.

The Petlas UN-1 5 Rib offers great load and driving durability. This model features a reinforced internal structure. As the tire does not deform, it securely carries heavy loads. This structure maintains the optimal tire shape under larger load pressure, optimizing not only its load durability but also the tire’s handling power. This load-carrying capacity makes this model an excellent choice for heavy-duty applications.

This specific tire model features a BIASED ply construction.

Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.


Shipping Information


If an order is placed before 1pm EST on a business day we ship the order the same day.

If it is placed after 1pm EST or over the weekend, we will ship the order out the following business day. Depending where you are located in the 48 contiguous states FedEx will take approximately 1-6 business days to deliver the tires to you from any of our three main warehouses located in Pennsylvania, Texas, and Florida and/or our smaller warehouses which are located across the country.

For a more specific time frame contact us via e-mail or telephone 866-480-8477.

Compatible Vehicles

IMPORTANT INFORMATION: Please note this is Original Equipment (O.E.) tire size only. The O.E. size is determined by the year, make, model and options of the vehicle. Original Equipment size data is the best information we currently have available to us. is not responsible for fitment errors. The most important aspect of purchasing a tire is its size, which cannot vary. It is buyer's responsibility to verify the tire size information. It is buyer's responsibility to verify whether a specific tire is suitable for a specific vehicle. However, this tire size may be fitted on other vehicles as well. To ensure that you are purchasing the correct tire size for your vehicle, please check the size of your currently mounted tires (locate on the tire's sidewall). The tire's sidewall also features the speed and load rating, indicating the speed and load capacity of the specific tire. The speed and load index can differ from the tires you currently have mounted on your vehicle up to a degree. Please check your vehicle's Owner's Manual or consult with your mechanic regarding the changes of your tire's speed rating and load index. If you have any questions regarding your tire size , speed rating and load index please contact us prior to purchasing and confirm with certified auto technician of any variance in speed and load index and sizes.

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