i have a 2000 alero which came stock with BF Goodrich Touring TA's, they have a max load rating of 640kg's, and have 500kg's on them(very front heavy car). The fronts always look low in pressure, as they bulge out a lot. Even at 35psi(30 is factory) they still look like they only have 20psi in them. Are they ok that close to the max load? i can't convince my dad to get some better ones(they suck horribly in snow). any opinions?