Ian S
Thinks s/he gets paid by the post
I drive my car about 6,000 miles per year, with probably 95% of that highway driving. Car is garaged. Starting at 10/32" tread depth when new and wearing down to 5/32" causes an increase in wet braking stop distance of about 15%. So I'm going to start thinking about new tires when the tread depth gets below 5/32" or after 6-7 years. I get free balancing at Discount Tires so the tires get regular inspections for any damage. I buy quality tires (currently Continentals) because they don't cost that much more than el cheapos and I value my life especially when driving my car at 75-80 mph!