Get a tape measure. Every 70,000 miles as a rule of thumb for cars doing 12,000 a year. If it's gone past that change it, you can't be sure the previous owner has. If it's done less...change it anyway. Thank you. I have a 16" and a 17" on the car when I google I get 18" a bit confuse...

Hi all, can someone please tell the size of wiper blades, I have a 1998 JX and when do I need to change the cambelt?