Hi M, Some tires have wear indicators, as hollow dots found on some slick tires (when dots smooth
out, replace). I check tires before riding, pick out any embedded matter, and look for cuts, bumps,
wear. Cracking tire wall indicate deterioration and tire should be replaced. A tire may last
thousands of miles or only a mile if cut or punctured severely. Tread wear, especially on a light
tread tire as Primos, alone does not indicate need to replace tire. A smooth or slick tire has
greater traction on non-loose dry and wet surfaces than a treaded tire. Ergo unless you are riding
on loose surfaces, tread wear should not be a problem. On my dual 650 wheel bent, I carry a spare
folding tire for bad cut insurance and duct tape for a variety of repairs.
"m..leuck" <[email protected]
> wrote in message news:[email protected]
> I have a Vision R-50 with Primo front and back, the back has become pretty smooth with no more
> trace of tread although it's not showing cord either.
> have about 1400 miles on it.
> Time to change it?