I have the best cooper tires available in sizes for civic dx96, the guy told me they wouldnt burst til about 70-80 psi. He also knows what I'm doing (hypermiling), and said 40-45 is fine for summer, but to drop it back in the winter for better traction. I'm running them at 45, and the eoc difference is visibly noticable. Where i used to come to a stop, bump starting at 20 in 3rd I have to substantially brake harder towards the stop sign or start the eoc much earlier. One EOC that I do which used to last .8 miles, is now almost 1.2 miles, so I can start about 5 MPH slower without blowing the red light. With adding P&G to the mix and knocking some weight off the car, I have seen an incredible increase in MPG. Check my chart on the last 2 fill ups, roughly 4-5 MPG. I'm tired of typing.
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