Tyre Pressure

[mfailes]

please could sum1 help me out....this is a bit of a school boy error but well i just aint got a clue....iv got 15' tyres, wot psi pressure do they need 2 b inflated to....my manual only tells me the pressure for 14'!!

cheers failesy

[ae111sr]

You won't go wrong using the standard pressure shown in your manual

[Unity Jon]

the pressure shown in your manual and on the car plates is correct for the curbside weight of the stock vehicle, stick to it as close as poss because its measured in PSI (pounds square inch) you dont need to add any pressure as you've actually added more Inches, the pressure should still remain the same.

the only exception to this rule i've found so far is nitrogen as it doesnt heat up like air, as there is no oxygen to get hot and expand it helps to have an extra 3-4psi for optimum running