We just use the 303 Aerospace on the seals and tires. In our case, tires stay covered as well. We will change out tires regardless when they hit the 5 year mark from manf date, as mentioned above. Thing is we've never kept one long enough to change tires due to age. Maybe this one we will.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.