We have a 2013 Pinnacle that came with the "Blowmax" tires. I also thought that I could run them for a couple of years but boy, was I wrong! One came apart after about 15 months and inflicted over $5,000. damage to the trailer body. Dynamic Tire Corp., the manufacturer of the tire refused to accept any liability for the trailer damage nor would they honor their warranty. They requested that I ship them the tire for examination and declared that I ran it underindlated. Yeah, well B.S. because I check the pressure frequently and NEVER exceed 60 mph except in very limited instances and that is for short periods like passing.
Fortunately, insurance took care of the trailer repair and I have used every opportunity such as this to publicize what junk these tires are. This includes writing Jayco a very long letter telling them that they should not be putting cheap foreign made tires on their high end trailers or at least offering an upgrade. To Jayco's credit they have since initiated such an option.
Now, for my own peace of mind and safety I replaced the OEM wheels with 110 psi rated ones and installed Goodyear G614's. It was a big pill to swallow but we now travel feeling that we've tipped the scales in our favor. We feel that it was the right thing for us to do.
The wheels were ordered off of the internet from www.recstuff.com
and the tires were purchased from our local Discount Tire store.