cracking

http://news.yahoo.com/u-aims-crack-down-novelty-motorcycle-helmets-154411045.html:bang head:

My 1998 Vmax runs ok, but I hear a "cracking" sound when idling the engine and it comes from both mufflers at different times. Other than than, everythings checks ok. I replaced the spark plugs but the sound still comes out the exhaust. The old spark plugs came out with some carbon built-up. Got...

I noticed some cracking on my front shinko. They are very tiny, hairline cracks. They seem to only be in the center groove, the rest of the tire looks fine. The tires were purchased in May and only have around 1K miles on them. I purchased them from Motorycycle Superstore. Anyone has a...