When I bought my 2006 Chevrolet Express 3500 in 2011 the original Bridgestone V-Steel tires were 5 years old and had cracking. I replaced with the same V-Steels and used 303 Protectant like I had been using for many years on tires with good results. At 5 years on these tires I had no cracking at all on the sun side, so the 303 did the job. There was some minor cracking on the side not facing the sun. I have read that sun is the biggest factor in cracking, but ozone can also cause cracking, so this is what was happening to the non-sun side. So when I replaced the tires, I again have used the 303 treatment, but I also started treating the non-sun side when I rotate the tires. I have 5 years on these tires nowband there is only minimal cracking on either side. So the 303 works well.
I try to apply the 303 monthly but sometimes I go more than that between applications.
303 has gone up a lot in price. So I am now trying Aero Cosmetics Rubber Care (from Amazon). It goes on and looks similar to 303, but time will tell if it works as well.
I use 303 (and now Aero Cosmetics) on my car tires (Yokohama) also and have never had a cracking issue on those tires either.
I try to apply the 303 monthly but sometimes I go more than that between applications.
303 has gone up a lot in price. So I am now trying Aero Cosmetics Rubber Care (from Amazon). It goes on and looks similar to 303, but time will tell if it works as well.
I use 303 (and now Aero Cosmetics) on my car tires (Yokohama) also and have never had a cracking issue on those tires either.