ecognomeist

Really grateful for all the advice, and thanks for checking in @stumpy. I wish I could say the mystery is solved. I finally had some time to look into this again over the weekend. I inflated the tire to about 40psi and sprayed both the tire and valve stem generously with soapy water. I was not able to detect any bubbling. But it's still losing pressure- down to 25psi today. My plan now is to start working down @2linby's list, although I admit to being a bit a newbie when it comes to maintenance- I don't have a ton of confidence or a ton of tools. But some of these things seem pretty straightforward and I'm game to learn.

Thanks, everyone, for the replies and the thoughtful advice. I'm seeing two main suggestions here: Use soapy water to search for a leak, either with a spray bottle or some kind of basin. FWIW, the dealer claimed to have checked for a leak with soapy water using the spray bottle method. They also claimed to have checked the valve stem. The inability of the dealer to sort the problem is evidence of incompetence. Find a new shop. Let's say I find a leak. Are these the possibilities and solutions? Valve stem. Can be fixed / replaced. Sidewall. New tire. Tread. New tire. Bead / rim. New tire and / or new rim.

Hello! New member here. This summer, I acquired a 2019 Yamaha Tracer 900 GT. Overall, I really enjoy the bike, but I'm writing now for your advice on a problem that stumped my local dealer. The bike is losing pressure from the rear tire. I offer some more details below, but the key points are I first noticed the problem on August 27. My last two measurements, about 48 hours apart, showed a pressure loss of 19 psi. I also noticed a measurable drop, from 36 psi cold to 30 psi warm, 2 hours into a ride. During a service visit on September 5, my local dealer was unable to find anything wrong with the wheel or tire, and they declined to offer any further advice about resolving the issue. I am accustomed to checking tire pressures regularly, but having to re-inflate the tire almost every day is cumbersome and annoying. Moreover, the noticeable drop during a ride makes me concerned about safety and the longevity of the tire. Since the dealer was unable to identify the problem, I was hoping someone here has any insights or suggestions. What should I do now? Thank you! ******************************************************************************************************************** Timeline and dealer visit August 27: as I was getting ready to ride the 150 miles or so to spend a few days with my in-laws. The front tire was a few psi below the recommended 33 psi, but the rear showed about 14 psi. I inflated the rear to the recommended 36 psi before departing. August 30: heading out for a short scenic ride, I checked the tire again and found the pressure was again in the teens. September 2: I checked the pressure before leaving for home. It was in the teens. I inflated it to 36 psi, and then checked the pressure at a gas station about 2 hours later. The pressure had already fallen to about 30 psi. I added some air and resumed the trip home. September 5: I took the bike to my local dealer to diagnose the issue. Before heading to the dealer, I checked the pressure, and found it was around 14 psi. I inflated the tire to 36 psi. At the dealer, I was told that a technician inspected the wheel and tire, and then covered the tire with soapy water to locate any leaks. The technician reportedly waited 40 minutes to see if any bubbles formed in the soapy water. As you will see in the attached invoice, the dealer was unable to detect a leak in the tire. When I pressed them to explain why the tire was losing pressure, they were at a loss; they found nothing wrong with the wheel or the tire. September 7: I measured the tire pressure at 17 psi.

Hello from the DC-Maryland-Virginia metro area! I recently gave up a 2011 Triumph Tiger 800 in favor of a 2019 Tracer 900 GT. Really enjoying the bike so far. Looking forward to being a part of the community.