Rear Tire Inflation?

[Retired Phil]

Hello,

I will be checking the tires for proper inflation before we leave on our trip what I wanted to know is how do I go about checking the inside rear tires? Is there a special tool for this. When I first tried to do this at a local gas station I got so frustrated I gave up. I know someone must have an answer on the easiest way to inflate the rear inside tires.

Thanks,
Phil