Air tyre inflators - why so high psi

[taylormj4]

Looking for a tyre inflator to go with my air compressor. Car tyres usually only go up to around 40psi, so why do all the inflators on the market go up to around 220psi or 200psi. With these scales, you're only using a tiny proportion of the scale so accuracy is going to be down. On the TVR, tyre pressures are only 22 psi (fronts) and 1 or 2 psi can make quite a difference to the handling. I wonder what the accuracy of the gauge is when it goes up to 220psi.

Haven't found one with a smaller range yet.

[taylormj4]

Good suggestions, thanks