Tire pressure?

Posted by Xavier Brulez On 2010/5/21 17:11:06

Hi,

Maybe a stupid question...

All of my cars do have tubeless tires except the Packard.
All tubeless tires are inflated at approx. 30PSI ( 2.1 kg pressure or Bar ), then the contactsurface that the tire makes with the road is limited at a few inches. At the Packard there are tires with "inner"-tires in it ( don't know the correct english name for it ). I've checked also the tire pressure and put them also at 30 Psi, but then the contact surface is maybe 4 to 5 inches...? I think the tires must be extra inflated?

Till what value of pressure may I inflate them?

The tires installed are:

Broadway Wide White H78-15 4-ply polyester
Whitewall tubeless M5-49 68-0145-737-1

Why are there inner tires installed at tubeless tires?
Can I find out how old these tires are?
Are these 'Broadway' tires OK, or is it rubbish?

Thanks!

Xavier