Are “ST”-type tires required on trailers?

RV Tire Safety with RV tire expert Roger Marble Question: “My 2012 Airstream Classic came with Goodyear Marathon ST225/75R15 LR-D tires. I would like to tell you how many original installed tires I have had blow out using the original and same size tires as replacements. I even replaced the LR-D’s with LR-E’s and still only get about 3,000 miles…

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How to take good pictures of tire tread for a complaint

RV Tire Safety with RV tire expert Roger Marble I occasionally see posts from folks complaining about some tread or sidewall condition on their RV tires. Frequently, however, either they can’t properly describe the condition or if they have pictures, the image is too small, poorly lit or from too far away to allow proper inspection of the condition for…

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Should you replace valve stems when installing TPMS sensors?

RV Tire Safety with RV tire expert Roger Marble Got this question on an RV forum: “I understand from the thread that you should use metal tire stems with TPMS [tire pressure monitoring system] caps. The ends of the tire stems on our trailer are metal with the only visible rubber part right where they go through the wheel. I…

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Final results of TPMS comparison tests

RV Tire Safety with RV tire expert Roger Marble Comparison of TireTraker external vs. TST 507 internal TPMS: Summary and my opinion. Since March I have been conducting a comparison test of two different tire pressure monitoring systems (TPMS). When I started in March the ambient temperatures were down near freezing. I completed my comparison at the end of July…

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When should you replace your tires? How old is “too old”?

RV Tire Safety with RV tire expert Roger Marble A lot of folks talk about tire age and when they “age out.” Here is what a few tire companies have to say about passenger and light truck tire service life: Japan Automobile Tyre Manufacturers Association (JATMA) recommendation: At 5 years have tires inspected by “Qualified tire service person,” and no…

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Internal vs. external TPMS comparison – Hot ambient temperature

RV Tire Safety with RV tire expert Roger Marble Since March I have been conducting a comparison of a couple different Tire Pressure Monitoring Systems (TPMS). One from TST has internal sensors, as seen below right. Please note this shot shows the TPM sensor and the steel band retainer. I was in the process of removing the extra band material…

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