Tireman9 wrote:
.........I am sure that Barry and I would have a great time trying to agree 100% of the time even if we had the tires in our hands..........
100% agree. Even experts don't always agree, but when we stand together as colleagues with respect for the other guy's opinion, it makes for some very educational - and lively - discussion.
JBarca wrote:
.......When we are talking "trailer" wheels what is an acceptable run out (total indicator reading) of the rim where the tire bead seats against?.........
Wheels? Mmmmmm. First, my expertise is in the rubber things. When it comes to wheels, Ihave limited experience and expertise.
But I will tell you I don't like TIR (Total Indicated Runout). The important value is the first harmonic - the best fit to the curve of a sine wave. I can't remember if a Hunter GSP9700 gives that value for the wheel or not - I'm thinking probably, because the machine does do matching.
The other half of this is that it is easier to make round wheels than it is to make round tires - and wheel's affect is greater - so the values has to be pretty small.
I'm thinking on the order of - rim only - 0.020" for the first harmonic and 0.030" for total (what Roger and I would call composite).
