What size are my Toyota Yaris rims?

I recently bought a Mazda RX8 and it’s a well-oiled machine! However, I want to give it a tune-up, as the previous owner said he hadn’t done so in almost a decade. I’m making a checklist of things I need to make the job easier. How many spark plugs does a Mazda RX8 need?

The last few times I’ve driven to and from work I’ve noticed a slight ticking noise in my vehicle. I don’t know where it’s coming from or how to fix it. Why is my 2006 Hyundai Sonata making a ticking noise?

I have car insurance through USAA, and it’s almost time to renew my policy. I didn’t qualify for any discounts when I signed up previously, but what is the good driver discount? Do I qualify for it if I haven’t had any accidents on my record?