Rusted Nuts

Originally Posted by mncruiser

...I just need to figure out what it causing the heavy vibration and noise coming from the front end at times...

This is virtually always from cupped tires. It's not always easy to see the cupping unless you examine the tires closely, but I would do exactly that; because if it's not just cupping it could be from delamination. If so, you'd see a "bubble" or lump somewhere on the tire.

Not something you want to ride on.

Anyway, if you've been running around with just 32~36 psi or less in the tire, and it's got at least 3000 miles on it, it's pretty much guaranteed that it's cupped. You will notice it most on rough roads, crowned roads, or while cornering.