I expect to be buying new rubber shortly for my class C. I have had success with Starfire tires (MFG by Cooper and made in US, at least the ones i have now are).
Anywho...I would gladly by them again. Check out mavistire.com (Cole Muffler). My size in a load range E are $99.99 which is very reasonable. The only reason i am replacing mine is that they are old. I don't wear out tires on our motorhome, they just age. Have had Starfires for nearly 6 years without problems.
I would avoid Firestone and any tires made in China.