Tony,
You didn't tell us how old the tires were. Here's my standard advice:
Quote:
Recent bulletins from the tire industry indicate that tires degrade simply due to time. The age of a tire is important even if the tire is unused. There some disagreement over how to best express this age limitation, but my take is:
If you live in a hot climate (AZ, CA, NV, TX, and FL) then the limit is six years. If you live in a cold climate (MN, ND, WI, MT, etc), then the limit is 10 years. States in between are ..... ah ........ in between.
You are in one of the 5 states were time becomes more critical than mileage. As Fsskier said the rubber changes as it gets older - and that is not only true for the tread rubber, but also true for the rubber used internally.
So if the tires are older than 6 years old, then replace them!