Backfire rhymes with:
brushfire, foxfire, hamsphire, hellfire, sunfire, abshire, barkshire, biedermeier, blackshire, brushfire, dannemeyer, darbyshire, devonshire, elvire, esquire, fesmire, foxfire, foxmeyer, gardenhire, goldwire, hamsphire, haywire, hehmeyer, hellfire, jurgensmeyer, kastenmeier, lancashire, macintyre, mcintire, mcintyre, newswire, obermaier, ohlmeyer, proxmire, pugmire, racamier, retemeyer, rightmire, rothmeier, settlemire, settlemyre, shropshire, stegemeier, stiegemeier, stoudemire, stoudenmire, sunfire, suttmeier, tietmeyer, untermeyer, waymire, whitmire, wilshire, wiltshire
Backfire sounds like:
bagpiper, becvar, beekeeper, biosphere, bookkeeper, buspar