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Old 02-16-2016, 12:25 PM   #1
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Westlake Tire Charts Help Please

Our new to us 2003 Newmar Mountain Aire came to us with a almost new set of Westlake CR976A tires. Size is 255/70 R22.5. Only have about 2,000 miles and only about year and a half old. I am settting up our home and have it loaded for our upcoming travels and getting ready to weigh it on all four corners for air pressure settings. Now I found a problem. I have scoured the internet and cant find a chart for this tire anywhere for weight and tire pressures. I have looked for hours. I found goodyear, Michelin etc and others but nothing on Westlake. Can anyone help me. Can I use the weight chart of other manufacturers if the size, rating are the same? I am unsure and don't want a mistake with this. Thanks in advance. Learned so much on the forums.
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Old 02-16-2016, 12:36 PM   #2
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Quote:
Originally Posted by revrick3 View Post
Can I use the weight chart of other manufacturers if the size, rating are the same? I am unsure and don't want a mistake with this. Thanks in advance. Learned so much on the forums.
No, you need the correct chart for you make/model/size of tire. Have you used their "Contact us" form on their website?
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Old 02-16-2016, 12:48 PM   #3
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Contact link will not allow me to send messge. Keeps saying for Westlake CANADA only and closes. out. Tried this.
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Old 02-16-2016, 12:50 PM   #4
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Not sure this is much help, but the CR976A in your size is listed on the Westlake AU web site. They do not give a maximum pressure (which may be on the sidewall) but it is a load/speed index of 140/137M. That translates to 5512 lb single tire, 5071 lb. dual with a maximum speed of 81 MPH.

There is a US contact us form at Contact Us | Westlake Tires. Your best bet would be to try that to see if they can give you a load/pressure chart. Tires with the same load rating from another manufacturer would be similar, but not exactly the same in my experience. Good luck with finding out the information.
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Old 02-16-2016, 12:56 PM   #5
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Great and thanks, I have sent an email. Those weights compare almost exactly to a chart I have for a Goodyear weight pressure chart. I hope to hear from them soon.
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Old 02-18-2016, 07:09 AM   #6
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Thanks guys, I did finally get a response from them and they sent me a chart by email. Compared it to a goodyear chart and it is pretty close to the same numbers. Hard to get it though. Seems it would be easy to just post on internet like most companies
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Old 02-18-2016, 05:41 PM   #7
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Westlakes are made in China I believe. that may be the delay. Check the date codes.
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Old 02-18-2016, 08:29 PM   #8
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Awesome help guys. Got my weights today and made a couple of item moves to redistribute some weight. Weight was overall pretty close side to side. I took highest weight on front then rounded up to next 100 pounds. I added an extra couple hundred pounds to front and to rear each. I also rounded up rear to next 100 pounds. Front came out needing 70 pounds and read needing 75 pounds. I figures to add extra to each and use 85 pounds on all tires. I had all tanks full including grey and black water and white water. all propane and gas tanks full. I also had it packed with items for travel. This should be the heaviest I use it almost all the time. I was over the maximum weight for loaded unit by 10 that's ten pounds. And I added several hundred pounds as a buffer. When towing my car I am under weight by 1,200 pounds. Does this sound about right for the weight load. First time setting all this up. Weighting at CAT scales was a breeze. Weighted entire rig. Then pulled off got ticket and pulled back on and straddled the scale and weighted one side to get individual tires. Worked like a champ. Thanks for all your help. Hope I did all this right.
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