Good Tyre pressure question.

robertxxx

What pressure do you inflate to, ie; what the car manufactor recommends or the tyre manufactor recommends.

My front tyres are a different brand (newer tyres) than the back, the front has a max pressure of 47psi and the back 54psi.

Do I inflate to the max like I do on my push bike which is always the best thing to do to avoid punctures or go with the car makers rec of 33psi front and 30psi at rear.

colm_mcm

Go with the manufacturers specs, never inflate to the max psi.

You'll end up with no tread left in the middle section of the tyre and it will affect how the car drives.

pippip

colm_mcm wrote: »

Go with the manufacturers specs, never inflate to the max psi.

You'll end up with no tread left in the middle section of the tyre and it will affect how the car drives.

Op: do I go with car manufacturer or tyre manufacturer?
Colm: go with the manufacturer

debabyjesus

Go with whatever is recommended by the car manufacturer. Maybe a couple psi more to improve handling and fuel economy if you want but road noise will increase and the ride will be more harsh.

colm_mcm

Car manufacturer of course. How would the tyre company know what car you have?

pippip

Would the cars recommendation not be based on the standard wheels that came on the car. If you had non original alloys would it change?

colm_mcm

Handbook would usually give a couple of different tyre sizes and pressures if bigger wheels were optional

sentient_6

The figures off the tyre aren't recommended pressures, just max pressures. Bit of a difference.

batman2000

pippip wrote: »

Would the cars recommendation not be based on the standard wheels that came on the car. If you had non original alloys would it change?

As Colm mentioned, Car manufacturer. Inside the driver door or on the fuel cap or in the car manual, the car manufacturer should have a list of tyre sizes e.g 195/55/R16 33psi/2.2bar or 205/45/R17 35psi/2.4bar and the recommended PSI/Bar beside it. It will also display what PSI/Bar to use if the car is fully loaded or with two adults.
If you worried about the correct pressures, I always use a digital gauge and never trust the gauges in the garages.