Tyre pressure?

[YellowDog]

The guy I bought my GSXR from says 28psi..... is this right?

also, how accurate are the air pumps at petrol stations or should I be going to a proper tyre place?


Cheers

As has already been stated, getting your tyre pressures right is a life and death decision.

I check mine once a week at cold before riding and they never change.

[mossy1200]

Yes. What that temp is a big variable. However, whatever that temp should be - it is controlled by the pressure you start with.

If the manufacture tells you 28psi then they have calculated factory suspension with the tyre they fitted for a 70kg rider etc.
If you change from the sports tyres to touring tyres and add your wife and gear you just changed the formula etc.
Lets say a sports tyre designed to operate at 60deg is running 70deg because pressure is to low.The tyre running to hot losses traction due to extra heat.The same applies to the same tyre running 40degres.Loss of traction = increased wear on tyre.
heat with tyres is relation to friction.Increase the footprint of the tyre by increased weight or low presure = increased heat.
increased pressure or decreased weight=less footprint=less heat.

It is advisable to pick the tyre that suits your bike and style of riding then set the pressure to get the temp required to make the tyre work correctly.
If 30psi gets this temp on a gsx1400 two up with gear it wont get high enough on a gsxr1000 one up(same tyre).
This is why checking the colour and temp of tyre will give you the best indication of how good the pressure your using is.Once you have that then maintain the pressure.Same pressure same guage.The accuracy of guage becomes irrelevant as long as it is constantly reading the same.