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Old 03-28-2007, 10:28 PM   #21
eco
 
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Drives: 2007 Black Yaris sedan
Join Date: Sep 2006
Location: Atlanta
Posts: 884
Churp,I have just about everything you can get to help with this problem,rolling,and wind resitence,and I can truley say I do not have this problem any more.I would first get wider tires,I use a too wide for my car 7.5" wide tire(I sometimes scrub,also very rare),and then I would get the sway bars.Ohya,dont worry about the effect of rolling resistence on a wider tire,it has minimal effect on this car,beleive me,Ive done the trial and error,Ive changed my tires several times now,and I ve measured with scangauge2,I found minimal to no effect at all,still averaged 38-39,and could get to 43mpg on either tire,hit 45mpg on stock tires 35psi on the tire,and half tank,so thats no fluke.
And if you use a wider tire,just add 2-3 PSI this will also help to stabilize your car from side to side movment,stiffer sidewall = less body movment/roll,but that means you could break the ass end loss faster and go into a skid,but you must be aware of these things you do to make your car handle better.I use 38 PSI when using my 7.5" wide tires(50# max tire) and 35PSI on stock tires(44#max).
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