Les Schwab in Washington State put a new set of Bridgestone 19.5 tires on our motor home. I decided upon the Bridgestone tires because the date code was only 3 months old. With my new Bridgestone tires my motor home became very squirrely to drive. First trip on our new tires was to the coast. Because we were taking our grandchildren my wife drove some of the kids in our Dodge Durango and I drove the rest in the motor home. On the way to the coast, not towing, our motor home would dodge and swerve as we drove down the road. The first time my wife road in our motor home after installing the new Bridgestone tires she was scared to death.
I weighed my coach and adjusted air pressure to meet Bridgestone tire pressurization charts. Les Schwab had inflated the tires to the max pressure. Adjusting pressure did not help. I had a steering stabilizer and rear trac bar added. My coach came with a front trac bar installed. The suspension mods made our coach drive a little better but it was still squirrely and would dodge either left or right whenever it decided too. After a few local trips we headed south for the winter. As we headed south our coach started behaving better. We took I-5 south through Oregon and California. After spending some time near LA and San Diego we moved on to Tucson, AZ. The last time our coach lurched was as we were driving into Tucson. Returning home from Tucson our coach drove great and it is still driving just fine.
I sent an e-mail to Bridgestone but they never answered. I asked Les Schwab and they could not give an answer. I have posted on forums and asked RV industry experts but no one can give me an answer.
My guess is that either the tires needed time to allow the rubber to age as they were only 3 months old when they were installed or the tires needed to be driven to break them in. I have never heard of either of my explanations.
Safe travels.
JD
2016 Winnebago Sightseer 33C on a 2016 Ford F53 Chassis
2009 Saturn VUE
Buddy our Bichon Frise
JD & Kathy