Dessers are fine
Like Pierre, I have been very satisfied with the Desser Monster retreads on my 9A. I found that they are VERY STIFF, and require some break in before they feel stable on the rollout. After installation I had a very squirrley aircraft, and even noticed more difficulty taxiing the plane. I posted here about the issue, but got no response.
What I did was lower the air pressure to about 25 psi. At that pressure, the aircraft felt perfect when the wheels were planted. After a dozen landings or so, I increased the pressure to about 33 psi (I use Nitrogen) and all is well.
You will also most likely need to hog out the wheel opening in the spat to clear the ample treads.
After about 70 landings, there is little to no visible wear on the tires yet. I like the way they feel, and they don't seem to flat spot as bad. We will see how they do this winter. Mine have GY Flight Custom hulls, and were matched nicely from Desser.
Keep in mind, I burned up a pair of El Cheapos real quick. Totally my fault. Long taxis, high landing speeds, touch and go's, and spinning to park, and failure to rotate half way through, all contribute to the poor wear I got on my kit tires. Since then, I have settled into a more tire friendly style of flying, and I have learned how to land my plane better, and slower. I don't spin into a space, and watch my taxi habits.
I can't really compare the wear on the Dessers to the kit tires fairly, as they were not given the same treatment, but I will definitely use them from now on.
Regards,
Chris