37-38psi during summer (summer tires). I don't mind the firmer ride to gain a bit of cornering. It also supposedly gives better fuel economy, but if I cared a lot about that, I wouldn't have the car/mods I do.
Depends on the tire, but I generally put 1-2psi more in the front than rear and run 34/32, 36/34 or so. Less with snow tires or in winter generally. I have run 40/38 on some tires with good success.<p>Some people will suggest pumping the rears up to rock-hard, to make them "loose" and allow you to induce oversteer. I don't recommend it for street use, but it's, er, fun to try. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> <p>I would encourage you to play with this to find what you personally like best. There's no more dramatic handling mod, and it's totally free. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> <p>Tom.
Not necessarily. The relationship is parabolic. There is a certain point where the tire will yield and loose grip sooner at extremely low pressures and will become unstable. However there is a sweet spot to be had. 36 will be better than 45, but 25 will be worse than 45psi. In general, lowering pressure will decrease fuel economy, improve softness of the ride and improve handling, but only to a certain point at which these values will all go haywire.<p>I have found I like 36 in the front and 39 in the rear, has tuned out understeer nicely though the snap oversteer used to be pretty bad with the falken 452s I had, the ecsta SPTs are a more progressive tire in that respect.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>chromecarz00</b> »</i></TD></TR><TR><TD CLASS="quote">Recommended is 30/30, whats that a good balance of?</TD></TR></TABLE><br>Everything, and nothing. Usually it's about comfort, and minimizing customer complaint. It certainly isn't about handling.<p>Generally speaking, tires increase their grip as pressure rises, up to a certain point. Low pressure is soft but the tread will squirm. This is fine at low speeds, or in a mostly straight line. Great in snow or on sand. Awful at speed on pavement.<p>Pay attention to the maximum pressure on the sidewall. This is a safety thing first, and a design thing second. Usually it's in the 40's for touring-type tires, and the 50's for performance type. Yes, you can go to 50 in those, and you might even like it.<p>Whatever you do, start somewhere sensible and go up or down in 2psi increments. Drive it for a while and take notes. Be sure to try it in the wet - hard tires will behave totally differently when wet.<p>Honestly, no two tires, cars, roads or drivers are the same in this regard. Learn yours, and have fun doing it.<p>Tom.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>05T5</b> »</i></TD></TR><TR><TD CLASS="quote">For those who are running 19" (carreragt7) hint, hint... what is the recommended tire pressure?</TD></TR></TABLE><p>Well I'm running 19s and I just set my PSI at 40 all around. Can't really tell the difference. I might change it up with 38 fron and 40 rear. In the winter I was running about 34 PSI all around to get a little more grip. Mileage I have given up since I got19s and also an aftermarket sub in the trunk.