I last replaced them with the plugs about 4 years/60-70k miles ago. I bought platinum plugs I if I remember correctly, so I still got some life on those. The car (2001 Buick Regal) is still in good shape just due for a tune up, so if the wires are due to be changed I'll add those to the list.
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.
Here's how it works:
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top
According to the 2001 Buick Regal service manual (PDF) spark plugs wires should be inspected at 100K miles, and replaced if necessary (p. 7-15).