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AMP Terrain Attack M/T LT305/55R20 E/10PLY BSW Tires

Rims Not Included

Per Tire:
$ 367.97
Estimated Delivery
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This listing is for new AMP Terrain Attack M/T LT305/55R20 E/10PLY BSW Tires. Manufacturer part number: 3055520AMPCM2.

The AMP Terrain Attack M/T tire is for serious off-roaders or Jeep and truck owners who love the styling of an aggressive all-terrain tire, and need authentic off-road performance. It is an extreme mud terrain tire with an asymmetrical tread and reinforced sidewall designed for rugged terrains. Some of the features are the open shoulder lugs that provide better traction in loose material like sand and mud. They are also designed for rapid evacuation of the built up mud. The reinforced sidewall  features large side-biters to maintain grip through extreme conditions or when aired down. The performance tread design on the Terrain Attack M/T has multiple sipes to grip soft terrain for better traction and less slippage. Another great feature of this tire is the 3 peak mountain snowflake symbol certification indicating the Terrain Attack M/T is tested and approved for severe snow service.


Specs: Value: Description:
Sidewall BSW
Describes the sidewall appearance. Examples: BSW= Black Side Wall, WSW = White Side Wall OWL = Outlined White Letters.
Load Index 121
The load index (LI) is a 2 or 3 digit number that corrolates to the maximum amount of weight the tire can carry. For example, a tire with a load index of 87 indicates that the tire can carry a maximim load of 1,201 lbs. In the case of our example the 87 identifies the tires ability to carry a maximum of 1,201 lbs. So 4 tires will carry a maximum of 4,804 lbs. Refer to your vehicle owner's manual for the recommended minimim Load Index. It is not recommended to install tires with a lower Load Index. By doing so, this could cause your tires to be overloaded thus potentially causing a blowout.
Speed Rating Q
Speed Ratings (SR) are based on laboratory tests and indicates the maximum speed the tire can achieve. These tests are based on limited time trials. Higher speed rating tires typically will yield better handling capabilities, but may often result in lower mileage. Refer to your vehicle owner's manual for the recommended minimum Speed Rating. It is not recommended to install a tire with a lower speed rating as it could affect the handling of your vehicle. It is important to note that speed ratings only apply to tires that have not been damaged, altered, under-inflated or overloaded. Additionally, most tire manufacturers maintain that a tire that has been cut or punctured no longer retains the tire manufacturer's original speed rating, even after being repaired because the tire manufacturer can't control the quality of the repair.
Load Range/Ply Rating E/10PLY
Ply Rating is related to the max load capacity. This value can be defined with a letter or number. The higher the number/letter, the higher the load capacity.
UTQG Not Available
To help consumers evaluate their tires, the U.S. National Highway Traffic Safety Administration (NHTSA) created the Uniform Tire Quality Grading System (UTQG). The UTQG rates tires are rated on their tread-wear, traction performance, and temperature resistance. The grade for each of these can be found on the sidewall of your tire (except for winter tires and certain light truck tires). Click here for more information.
Max Single Load(lbs) 3195 The maximum load this tire will support. Remember to multiply this number by the number of tires installed on your vehicle to get the maximum carrying capacity. This number is directly related to the Load Index.
Max Single Air Pressure(PSI) 65 The maximum air pressure this tire will support. This does not represent the amount of air pressure your tires should have at all times. Consult with your owner's manual to determine the best air pressure you should use for your vehicle.
Tread Depth 19.0 The amount of tread on the tire. Once the tire is worn to 2/32nds, it is considered fully used and should be replaced at that time. Most tires will have tire indicators in the grooves of the tire to help you determine when the tires are worn down to 2/32nds.
Tread Design Not Available
Nondirectional - most common, same tread pattern on inside & outside of the tire. Can be rotated to all four corners of vehicle.
Asymmetrical - tread pattern is different on the inside to the outside of the tire, and must be mounted properly. Can be rotated to all four corners of the vehicle.
Directional tires - roll in only one direction, must be mounted properly. Once mounted they must remain on the same side of the vehicle, and only be rotated front to rear.
Rim Width Range 8.5-11.0 The approved wheel rim width range this tire will support.
Measured Rim Width Not Available The recommended wheel width as recommended by the tire manufacturer to get the best wear us performance for this tire.
Section Width 12.6 The measurement from sidewall to sidewall.
Tread Width Not Available The measurement from one side of the tread to the other side of the tread.
Overall Diameter 33.39 The height of the tire when fully inflated.
Manufacturer Part Number 3055520AMPCM2 Manufacturer part number (sku)


Shipping rates and estimated delivery times are available on tires after setting your delivery zip code. Tires ship via FedEx Ground and the shipment times are a very good estimate, although not an exact number of time-in-transit days. Tires are delivered Monday - Saturday. FedEx does not pick up orders on weekends or certain holidays. Once the tires are picked up, the time-in -transit estimate begins. If you place your order Friday afternoon, or on the weekend, your tires it will not ship until the following week. Currently we only offer FedEx Ground, expedited shipping is not available. Depending on when you place your order, there may be one, possibly two days of processing time. Shipping delivery times can be impacted by weather events across the country.

You can choose between 3 delivery options:

  • Your tires can be delivered directly to your billing address.
  • Your tires can be delivered to an alternate address. In this case, please specify the delivery address and the person authorized to receive the tires on your behalf.
  • The tires can be delivered directly to a Tire Installer of your choice. Please enter the address of the Tire Installer in the "Ship To" address and be sure to coordinate acceptance of your shipment from

You will receive an e-mail confirmation of the transaction when you place your order. Please save a printed copy of your order confirmation for your records.


We accept American Express, Visa, MasterCard, Discover, PayPal, Katapult and Affirm for Tire Financing.

Return/Refund Policy

See General Terms and Conditions for additional Return/Refund details

Specs and Sizes

Size Load Index/ Speed index UTQG Load Range/Ply Rating Overall Diameter Section Width Rim Width Min Rim Width Max Rim Width Meas Tread Depth (in) Max Single Air Pressure (PSI) Max Single Load (lbs) Max Dual Air Pressure (PSI) Max Dual Load (lbs) MFG #
33X12.50R20 114Q - E/10PLY 33.0 12.5 8.5 11.0 - 19.0 65 2600 - - 33125020AMPCM2
33X12.50R22 109Q - E/10PLY 32.52 12.5 8.5 11.0 - 19.0 65 2271 - - 33125022AMPCM2
33X13.50R24 121Q - F/12PLY 32.52 13.58 - - 11.0 19.53 80 3200 - - 33135024AMPCM2F
33X14.50R22 117Q - F/12PLY 32.7 14.46 10.0 13.0 11.5 19.0 80 2835 - - 33145022AMPCM2F
35X11.50R20 124Q - E/10PLY 34.76 11.42 8.0 10.5 - 19.53 80 3525 - - 35115020AMPCM2
35X12.50R17 125Q - E/10PLY 34.8 13.4 8.5 11.0 - 19.0 80 3640 - - 35125017AMPCM2
35X12.50R18 123Q - E/10PLY 35.0 13.2 8.5 11.0 - 19.0 65 3415 - - 35125018AMPCM2
35X12.50R20 121Q - E/10PLY 35.04 13.39 8.5 11.0 - 19.0 80 3195 - - 35125020AMPCM2
35X13.50R24 118Q - E/10PLY 35.0 14.0 8.5 11.0 - 21.0 65 2910 - - 35135024AMPCM2
35X13.50R26 117Q - F/12PLY 34.6 13.6 11.0 13.0 - 19.5 80 2835 - - 35135026AMPCM2F
35X15.50R22 125Q - F/12PLY 34.7 15.54 11.0 14.0 - 19.0 80 3640 - - 35155022AMPCM2F
37X12.50R17 124Q - E/10PLY 37.0 13.5 9.5 10.5 10.0 19.0 50 3520 - - 37125017AMPCM2
37X12.50R22 127Q - F/12PLY 36.76 12.52 8.5 11.0 - 19.53 80 3860 - - 37125022AMPCM2F
37X13.50R20 127Q - E/10PLY 37.0 14.0 8.5 11.0 - 19.0 65 3860 - - 37135020AMPCM2
37X13.50R22 123Q - E/10PLY 37.0 14.0 8.5 11.0 - 19.0 65 3415 - - 37135022AMPCM2
37X13.50R24 120Q - E/10PLY 37.0 14.0 8.5 11.0 - 21.0 80 3085 - - 37135024AMPCM2
37X13.50R26 117Q - F/12PLY 36.3 13.58 9.5 12.0 - 19.53 80 2835 - - 37135026AMPCM2F
37X13.50R28 114Q - F/12PLY 36.76 13.58 11.0 14.0 - 19.53 80 2600 - - 37135028AMPCM2F
38X15.50R24 127Q - E/10PLY 37.76 15.54 - - - 19.53 65 3860 - - 38155024AMPCM2
38X15.50R26 126P - E/10PLY 37.7 15.2 12.5 15.0 - 19.53 65 3750 - - 38155026AMPCM2
40X15.50R24 128P - E/10PLY 40.0 16.0 11.0 14.0 - 21.0 65 3970 - - 40155024AMPCM2
LT285/55R20 122Q - E/10PLY 32.3 11.2 8.0 10.0 - 19.0 80 3305 - - 2855520AMPCM2
LT285/65R18 125Q - E/10PLY 32.83 11.93 8.0 10.0 - 19.0 80 3640 - - 2856518AMPCM2
LT305/55R20 121Q - E/10PLY 33.39 12.6 8.5 11.0 - 19.0 65 3195 - - 3055520AMPCM2
LT325/50R22 122Q - E/10PLY 34.8 13.0 9.0 12.0 - 19.0 65 3305 - - 3255022AMPCM2