Will the “correct” tire pressure issue ever be resolved?

RV Tire Safety with RV tire expert Roger Marble Question: Do you think the tire pressure issue will ever be resolved to people accepting the values recommended by the tire manufacturers based on actual loading? Or will some always be confused between the tables, the placard and quotes of Federal Motor Vehicle Safety Standards (FMVSS) from some on the forum?... Read More

What you should know about tire “safety margins”

RV Tire Safety with RV tire expert Roger Marble Some people ask “How much Safety Margin should I have with my tires?” While this concept is simple, the reality is quite complex. If you want to skip over “why” safety is complex just jump to the “Bottom Line” below. In engineering it is more proper to talk about “Safety Factor”... Read More

Whom to believe on RV tire inflation?

RV Tire Safety with RV tire expert Roger Marble I was reading an RV forum and found a number of folks offering their interpretations on what the proper inflation is for tires in RV application. Some insisted the only correct inflation pressure was what was shown on the “Tire Placard” or “Vehicle Certification label.” Here is my reply: We have... Read More

OK to change tire size on duallies?

RV Tire Safety with RV tire expert Roger Marble Question from RVer on a forum “I need six new tires for a 2004 38-foot Dutch Star on a Spartan chassis. Michelin tire models and sizing has me totally confused. Current Michelin size is 275/80R22.5. Dealers claim this Michelin size is interchangeable to 295/75R22.5 from brands that don’t offer the original... Read More

“Easy-lube”-ing your RV axle bearings? Take note!

  By Roger Danforth Much has been written about the wisdom of pulling your trailer wheels apart every year or two and taking the time to inspect and repack the axle bearings. Oftentimes you’ll hear a response like: “Why waste the time? Just put on a lube system that allows you to pump fresh grease into the system. No need... Read More

Use your RV levelers to lift a tire off the ground?

  By Russ and Tiña De Maris One of the biggest “helpers” that Class A motorhome owners often have is a good leveler system. At the push of a button or two, their rig is soon leveled up and stable, ready for an overnight, or weeks, without fussing with blocks, jacks, and the in-and-out of the cab that other RV... Read More