The bit everyone gets wrong
10 percent is not a universal rear allowance.
You will read on plenty of sites that Arkansas allows 10 percent on all rear windows. That is not what the statute says. The 10 percent allowance for side windows behind the driver is written for trucks, buses, trailers, motor homes and multipurpose vehicles.
If you drive a sedan or a coupe, your rear side windows are held to the same 25 percent floor as the front ones. This matters, because it is the difference between a legal install and a ticket, and it is the single most common misunderstanding we correct at the counter.
There is a second piece of confusion worth clearing up. Aggregator sites often cite 27-37-307 as though it creates a separate rule for sedans. It does not. That section deals with chauffeur-driven sedans licensed for hire, which is to say limousines, and it has nothing to do with your daily driver.