A flat tyre when you are toodling around the shops or out on a Sunday drive is a real pain, you probably haven’t got a full size spare wheel and not enough room to put the punctured wheel anywhere. RACV membership or Porsche roadside assistance will be really handy if this happens to you.
If your car doesn’t have tyre pressure warning sensors, regularly checking your tyre
pressures is worthwhile. Unfortunately you often can’t easily pick a slow puncture just by looking at your tyres, especially if you have low profile tyres. It’s quite common for drivers not to notice that one tyre is a few PSI below specification because they’ve got a nail in the tread that can’t be seen.
Sunday morning give your pride and joy a good clean up, go to the servo and check the tyre pressures. If one wheel is out by 4 or 5 PSI don’t fill it up and forget it, get it checked to find out why it’s losing pressure. This is especially a big deal if you drive on the highway, an under inflated tyre will generate extra flex and heat in the tyre sidewall. It is likely that many single vehicle accidents due to tyre failure are caused by under inflated tyres that overheat and blow out after an hour or so of freeway driving.
A quick Google search will bring up many articles like this one that go into more detail on the importance of tyre pressures.