i wouldnt. 60psi was max on mine. because the more you force it, the more likely it is going to leak out from valve steam, seal, etc. i always have compressor in my car just as a backup. i was taught: 3 is 2 -- 2 is 1 -- and 1 is none.colonelcasey wrote: Do you think it's better to pump up the spare to something higher like 70 psi? My thought is that the spare tire can hold good pressure a little longer and if you really do need to use it, you can just bleed it down back to 60 psi.