Tires are prob 8 yrs old Michelin (45k rated) - shop tells me it is at 4
The market placed between treads has not reached yet.
Only bother is that I need to top up (all four tires) air less than every 4 weeks - used to be every 4 months or so.
Newer Michelin tires are 90 rated Drive about 7k/yr
Should I wait on tires?