Roadmaster RM170 235/75R17.5 J/18PR  Tires

Rims Not Included
Per Tire:
$ 23.63
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  • MFG: 90000007216
  • Ply Rating: J/18PR
  • Availability:
    In Stock
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The Roadmaster RM170 235/75R17.5 J/18PR Tires is a Commercial Truck - All Position tire. Manufacturer part number: 90000007216.

The RM170 is a pick-up and delivery all-position tire and with the addition of the 17.5 inch sizes, it is also ideal for low-platform trailers. The solid shoulder tread design and high tensile strength belt construction combine to provide the retreadability and treadwear that your local hauler requires. It is a good option if you service unpaved lots, or travel even short distances on gravel roads since the V-shaped tread grooves have stone ejectors that kick out rocks.  Rocks that stay imbedded in the rubber can eventually drill down to the steel casing ply and cause belt seperation.

Size Load Index/ Speed index UTQG 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 #
215/75R17.5 135/133L - H/16PR 30.5 8.4 6.0 6.75 6.0 15.0 125 4805 125 4540 90000007215
235/75R17.5 143/141J - J/18PR 31.5 9.4 6.75 7.5 6.75 15.0 125 6005 125 5675 90000007216
265/70R19.5 137/134L - G/14PR 34.3 10.4 7.5 8.25 7.5 17.5 110 5070 110 4675 90000007221
10R22.5 141/139L - G/14PR 40.3 10.2 6.75 8.25 7.5 18.0 115 5675 115 5355 90000007222
225/70R19.5 128/126L - G/14PR 32.1 9.0 6.0 6.75 6.75 15.0 110 3970 110 3750 90000007218
225/70R19.5 125/123L - F/12PR 32.1 9.0 6.0 6.75 6.75 15.0 95 3640 95 3415 90000007217
245/70R19.5 136/134M - H/16PR 33.1 9.9 6.75 7.5 7.5 16.0 120 4940 120 4675 90000007219
245/70R19.5 133/131L - G/14PR 33.1 9.9 6.75 7.5 7.5 16.0 110 4540 110 4300 90000007220
Specs: Value: Description:
Sidewall Not Available
This describes the sidewall appearance. Examples include Black Sidewall, White Sidewall, and White Letters.
Load Index 143/141
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 J
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.
Ply Rating J/18PR
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) 6005 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) 125 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 15.0 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 6.75-7.5 The approved wheel rim width range this tire will support.
Measured Rim Width 6.75 The recommended wheel width as recommended by the tire manufacturer to get the best wear us performance for this tire.
Section Width 9.4 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 31.5 The height of the tire when fully inflated.
Manufacturer Part Number 90000007216 Manufacturer part number (sku)

FedEx Delays Update

Due to Hurricane Ida, FedEx is experiencing delivery delays in certain portions of the USA.

Download additional details on cities, states and ZIP Codes affected.


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:

  • 1. Your tires can be delivered directly to your billing address.
  • 2. 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.
  • 3. 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

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