Category: Roger Marble

RV Tire Safety with RV tire expert Roger Marble I saw a post from an RV owner who discovered something on the upper sidewall of a tire when doing a visual inspection. He was calling this a “crack” and was looking for input from readers of that RV forum. A number of readers chimed in with opinions ranging from “Time... Read More

RV Tire Safety with RV tire expert Roger Marble Following a few different RV forums, I see a number of people that clearly do not follow this blog and have questions on what inflation to run. While many of these folks are discovering that the new Goodyear Endurance line seems to come with higher Load Range or only in larger... Read More

RV Tire Safety with RV tire expert Roger Marble Continuing my series on Tire Pressure Monitoring Systems. Last time I covered internal versus external TPMS temperature reports when it was moderate to just cool outside. This report is different. On my way south to Georgia from Ohio it got downright cold. I stopped for the night in Kentucky and in... Read More

RV Tire Safety with RV tire expert Roger Marble Last week I posted on the question of “How Accurate is your TPMS?” This week I am continuing my close examination of Tire Pressure Monitoring Systems. We saw that the variations in pressure readings were measurable but that IMO the differences were not meaningful. I recently traveled from Akron, Ohio, to... Read More

RV Tire Safety with RV tire expert Roger Marble I have seen a number of people express some concern about the accuracy of the pressure readings from their tire pressure monitoring system (TPMS). You can read my previous responses here and here I have also pointed out that the primary purpose or “job” of a TPMS is to warn the... Read More

RV Tire Safety with RV tire expert Roger Marble Question from a reader: Our Jayco Hummingbird came from the factory with P235/75R15SL tires. The TT GVWR is 3,750 lbs and the GAWR for the axle is 3,500 lbs. This is a single axle TT. The P-rated tires were like a pogo stick at max inflation. We changed from the factory... Read More

RV Tire Safety with RV tire expert Roger Marble As trailer owners start applying the new Goodyear Endurance ST tire, many are discovering that for some sizes the Endurance tire is only available in a Load Range that is higher than their OE tires. Some are concerned about what inflation to run. I have even seen some claim that running... Read More

RV Tire Safety with RV tire expert Roger Marble I have written a number of times on the topic of Interply Shear. This is the force that is trying to tear the belts of radial tires apart. There are some highly technical papers on the topic and you can review them after a simple Google search on the term. You... Read More

RV Tire Safety with RV tire expert Roger Marble On many of the RV forums I monitor that focus on trailer application, there are recurring questions about changing tires. Some wonder about going up in Load Range (Ply Rating). Some wonder about changing the “Type” of tire: P > ST, or P> LT, or ST > LT. Others want to... Read More

RV Tire Safety with RV tire expert Roger Marble Roger read a recent post on an RV forum about a tire that lost its tread (photo below right), and a response from another forum member about “zippering,” as follows: “Your tires look like they threw the whole tread off. I always assumed that the treads I see on the road... Read More

RV Tire Safety with RV tire expert Roger Marble This tire failure was not a “blowout,” but definitely was a Run Low Sidewall Flex failure. The cause was not having a tire pressure monitoring system (TPMS). I read the following on an RV trailer forum: “BOOM, it happened again; however, this time it was with the upgraded Maxxis tires. It... Read More