Posted by Vaughn [162.158.90.85] on Monday, May 26, 2025 at 21:40:43 :
In Reply to: Road pressure tire balancing posted by Bruce in BC [162.158.146.46] on Monday, May 26, 2025 at 11:56:10 :
Tire manufacturers that don't make a perfectly round tire use paint, Red dot for high spot on the tire and a yellow dot for a low spot.
So now let's think this through using the new pressure balancing technique. I drive my old PW into the shop and because I'm running Michelin XLs, tires have no paint dot or other markings because Michelin makes a perfectly round tire. Because the tires have been replaced and tires rotated over the years, and techs using an air wrench when mounting the tires that have worn the seats on the rims to center the nut in the seat, my rims are out-of-round. So now the techy takes off my tire/rim and mounts it on the new technology machine using probably a cone nut in the rim's dish to secure the rim to the machine. The techy then starts the machine and it does it thing balancing any pressure areas and differences in weight until the tire is perfectly balanced, I'm impressed. Now the tire gets remounted and off I go, what's going to happen? Since my rims are out of round due to worn seats, the tires are going to experience pressure points that the high tech machine couldn't identify using a cone nut since they aren't going to have an adaptor for the PW seats and spacing. Right out of the shop I'll have an out-of-balance condition, spent a bunch of money, and no better off. I have 11ozs. of SS balancing beads in my tubes and after messing with my rims, I may need to increase the beads by maybe 4ozs. each to compensate for the rims.
Considering this, the old way may be better than the new.