Up until my last tire change, I had been running TKCs for years. Besides being excellent (though short-lived) tires, they always held their air pressure at a rock-solid PSI for months at a time. I switched to Anakee-2 on my last tire change - based on a higher ratio of on-pavement vs. off-pavement riding planned for this summer. Also an excellent dual-sport tire and very pleased with it overall. One thing I have noticed however, is that both the F & R tires lose about 1#/week - not a huge deal, I know, but it is a bit of a nuisance. I've thoroughly checked for leaks around the valve stems and rims - nada. Does anyone have experience with some tire brands "seeping" air more than others?
Assuming you changed your valve stems, the tire shouldn't leak at all. That said, the Pilot Road 2 tires on my ST leak a bit, about a pound a week. A couple things I would normally suggest, like scratches on the bead seat, or debris in the bead, don't make sense on your, or my, tires since both are doing it. Jim
Hi Jim - thanks. Agreed - they shouldn't leak - but since it's happening on both my tires, and at a fairly equal rate, then I'm wondering if certain rubber compounds inherently "seep," osmosis-like, through the compound itself. In describing the Anakee-2, Michelin's website indicates that they incorporated a new "Silica-charged rubber compound." Again, having to top-off 1-2#/week is hardly worth whining too much about, but I am curious as to what might be going on here.
Yup. I've got Anakee 2's, GSA spoked wheels, and front & back seems to lose ~1 psi/week. Since it's consistent, it provides a cadence to check the pressure (beyond the normal preride tink-tink-tink/thunk-thunk-thunk front/back tap).
Hey..I hear you folks talking about 1-2 psi differences..I know you realize that ambient temp makes a big difference; as does the temp of the air you put in...stabilize tire pressure [if you filled or added to it, let it sit for a day] then re-check at the same ambient room/shop temp ..obviously not after running on the road and generating heat..
C'mon Phil - give us more credit than that... Yes, of course - I'm checking these pressures under an "all else equal" setup, i.e. same ambient temperature. What other method can you use when expecting an accurate tire pressure reading? Also, I haven't merely done a 1-week sample. The 1-2#/week pressure loss has proven to be cumulative.
Had the same problem until I started using Ultraseal, now the pressure remains stable for months. Since the valve didn't change I seems to me the leakage must have been general porosity. Just my $0.02 Roger
Credit? Sorry only cash! No disrespect intended...I saw 1-2 psi and thought that most gauges don't even have that precision and hell the needle on my gauge is almost that fat...and of course temps come and go...no, I understand that you leveled the variables.
