Is there a difference between 100mm and 115mm

[Sijray21]

When I buy a car, I will not lease it. I will pay all of what it is worth on the same day.

you don't have to lease it, you can still pay installments while still paying for the car as a purchase. That way you can finance it. If you have a lot saved up then you can make a very large down payment if you'd like, gotta start saving now if that's the case though.