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I feel I can add something in regard to the tire pressure issue. I am now on my second set of tires on my '99 Corolla. This set is identical to the set I had previously. These tires are Kumho 795 Touring A/S. For the first set, I maintained the recommened pressure (this is the pressure listed on the driver's door) which is 30 PSI. These tires wore down to the wear bars at 55K miles and I averaged 35 MPG over this period (roughly 90% highway and 10% city driving). When I purchased the second set, the tire guy I purchased them from suggested I run them at 5 PSI over the recommended pressure. He said not only would my mileage improve, but so would treadwear, handling, and road noise. He was right. I now have about 50K miles on these tires and they aren't even close to being worn down to the wear bars. I've also averaged 38 MPG since I've had this set of tires under the same driving conditions. I'm very happy with these results. The only reason I wouldn'r run them at any higher pressure is that it sacrifices too much in the way of ride comfort. I noticed a difference in stiffness just going from 30 to 35 PSI. I can only imagine how rough the ride would be at the max sidewall pressure (which is 44 PSI).
Over-inflating the tires definitely works however, I would take care not to exceed the max pressure listed on the sidewall for safety reasons.
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05-27-2007, 09:34 AM
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