GOODYEAR MARATHON Radial Trailer Tire, ST225/75R-15"

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GOODYEAR MARATHON Radial Trailer Tire, ST225/75R-15" Load Range D. #762-173-400


GOODYEAR MARATHON Radial Trailer Tires
Specifically designed to make trailer towing easier, more stable and more economical.  Marathon radial trailer tires by GOODYEAR are ideal for travel trailers, pop-up campers, boat trailers, and fifth wheel trailers.  Each GOODYEAR Marathon tire delivers dependable highway stability, positive traction and long lasting wear. #762-173-400

Load Range: D (8-ply)
Max. Capacity: 2540lbs. each
Overall Diameter: 28.3"
Maximum PSI: 65 lbs.

Features:

  • Special trailer tire design provides the strength of a bias tire, as well as the durability and stability of a radial tire
  • Created specifically for trailers and not intended for use on other vehicles
  • Double steel belts and full nylon plies combine for superior function and long tire life
  • Computer-generated tread design and premium rubber-compound materials
  • Maximum traction in wet or dry conditions
  • Smooth ride and excellent stability at highway speeds
  • ST tire meets Department of Transportation specifications

Goodyear Marathon Radial Trailer Tires for trailer use only
 

Manufacturer Part Number: 762-173-400
Stock # TRE762-173-400
Price: $134.95
Quantity:
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GOODYEAR MARATHON Radial Trailer Tire, ST225/75R-15" Load Range D. #762-173-400
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POPULAR ALTERNATIVE TIRE SIZES

For an equivalent size, a HIGHER load range tire can always be substituted:

  • ST225/75R15 LR D Marathon substituted for ST225/75R15 LR C Marathon
  • Match inflation pressure to load carrying requirements using load and inflation tables

Some manufacturers use slightly different size designations. Popular RV tire size equivalents:

235/80R22.5 = 245/75R22.5
255/80R22.5 = 265/75R22.5
275/80R22.5 = 295/75R22.5

CONVERTING FROM 8R19.5 TO 225/70R19.5:

Many RV owners are converting from 8R19.5 to the newer, more popular 225/70R19.5 size. In most cases this can be done successfully. The following guidelines should be consulted to determine if this conversion can work for you. Before making a final decision to convert, we recommend contacting your local Goodyear RV tire retailer to verify that all considerations have been met.

Advantages = more even wear, improved stability

Conversion Checklist (8R19.5 to 225/70R19.5 only):

  1. Check with the vehicle manufacturer to ensure approval of the tire/wheel clearance and fitment
  2. Verify that rim width is compatible to run the 225/70R19.5
  3. A wider minimum dual spacing is required and should be confirmed
  4. Due to a tire diameter and static loaded radius difference there will be an increased number of revolutions per mile which will mean that the vehicle speedometer and odometer will read approximately 2.5% high. Because the difference in RPM is less than 3%, however, no changes to gearing would generally be required.
Size Type LR RIM Min. Dual Spacing Width Tire Diameter Static Load RPMs Speed
Load & Inflation
Single Dual
8R19.5 G159 F 5.25, *6.00, 6.00RW, 6.75, 6.75RW 9.1 7.9 33.1 15.6 628 75 3500 lb @ 110 psi 3375 lb @ 110 psi
225/70R19.5 G670 RV F *6.00, 6.00RW, 6.75, 6.75RW 9.7 8.6 32 14.9 644 75 3640 lb @ 95 psi 3415 lb @ 95 psi

*Measurements based on this rimmed width.

Knowing the load/weight of your RV is critical to understanding the proper tire inflation to carry those loads. In order to know the load, an RV owner must weigh their RV.

WEIGHING YOUR RV
  • Your RV must be weighed fully loaded
    - Fully loaded includes, food, clothing, water, fuel, supplies and any towed vehicles
  • RV must be level on the scale
  • If possible, weigh by individual wheel positions.
    If not, weigh by individual axle positions
  • A difference in weight from side to side may indicate that redistribution of the load is necessary
  • Inflation pressure should be adjusted to handle the maximum load
  • All tires on the axle should carry the same inflation pressure
  • Some examples of scales are:
    - Platform scale and Segmented scale
    - Portable scale: most desirable, it weighs each wheel position and the true load of the tire

WEIGHING YOUR TRAVEL TRAILER
  • Weigh the trailer fully loaded
    - Fully loaded includes, food, clothing, water, fuel, supplies and any towed vehicles
  • First weigh the trailer unhitched from thetow vehicle
    - The total weight must be less than or equal to the Gross Vehicle Weight Rating (GVWR) for safe operation – otherwise, contents must be removed
  • Weigh the trailer by wheel position (preferred) while hitched to the tow vehicle
  • While hitched, the tow vehicle should be weighed
  • Proper hitch height is required for a level trailer
  • Even distribution of weight between the front and rear axles is required
  • Inflation pressure should be adjusted to handle the maximum load

Product Reviews

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Great Tire for out Travel Trailer
Submitted by Gene Peterson on 8/1/11 6:02 PM
These tires were installed on our new travel trailer . I was a little hesitant about "st" type tire, and the fact no one knew what this meant. They have been used about a year now, and have been really reliable. Hardly any wear showing, and hold air pressure good. 6 ply rating makes me feel confident I won't have a blow out down the highway somewhere.