The rear Metzler ME880 on my R1150RTP was loosing 10 psi/24 hr. period. Several close inspections of the tire revealed no obvious punctures or leaks or other damage or defect in the tire. The tire still has about a 1000 miles of life left in it, so I didn't want to replace it if I could fix the leak.
I've had amazing success with 'Slime' in bicycle tires, and I was curious if it would work on a motorcycle tire. I visited the manufacturer's website, and discovered the product is recommended for all pneumatic tires - wheelbarrows, bicycles, scooters, motorcycles, cars, trucks - if the tire is designed to hold pressurized air, you can use 'Slime'.
The amount of 'Slime' required is dependent upon the size of the tire. The recommended amount for a motorcycle tire is 16 ounces, so I purchased 16 ounces of 'Slime'. I deflated the tire and used the tool included in the product cap to unscrew the valve stem. Once the last few psi of air escaped the valve stem, I pumped 16 oz. of 'Slime' into the tire, and then replaced the valve stem. I then pumped the tire up to 42 psi. The directions say to rotate the tire after pressurization to coat the inside of the tire with the substance. I decided to go for a 20 minute ride to ensure all was well, including approximately 10 miles of 70+ mph on the freeway. There was no visible 'Slime' escaping from the site of the leak - wherever it might be.
The next morning (yesterday), the tire was still pressurized to 42 psi. This morning, the tire was still reading 42 psi. I consider the leak fixed.
The product documentation says the 'Slime' remains in liquid form inside the tire, and will be ready to seal any future small punctures or leaks. Considering I only need the tire to last me another month, I consider this to have been a complete success. I'll warm my mechanic that my rear tire contains 'Slime' when it's time for the replacement, as I've heard it can make quite a mess if the mechanic doesn't know the tire contains 'Slime'. The label says the product is non-toxic and water-soluble, so it can't be too difficult to clean the rim when replacing the tire.
I did a search of the MOA forum before starting this new thread, I the latest discussion I could find regarding liquid tire sealant products was from 2005. Has anyone else had either positive or negative experiences with 'Slime'?
I was sold before on bicycle tire applications, and now I'm a believer of using 'Slime' in m/c tires. I'm moderately interested in the effects of adding a pound to the rolling weight of my tire, but I'm also thinking that the liquid substance inside the tire now acts the same way as "Dynabeads", providing a dynamic balancing effect to my rear wheel.
Manufacturers website: http://www.slime.com/