Noticed a rear tyre was a bit flat but the others appeared fine.
Must have happened over past couple of days coz only recently cleaned the rims and all was well then.
First thing that came to mind was PUNCTURE and knowing my luck it's always at the edge and not repairable.
On closer inspection, black metal dustcaps that came with my Nismos were missing on passengers side too.
BLEEDIN' KIDS
Not only swiped the caps but must have found it funny letting my tyre down.
Only had 12psi left.
Thank goodness I noticed it early or possibly wrecked tyre, or worse rim, OR WORSE BLOWOUT
Anyway, hopefully new tyre not needed, not even punture repair