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As far as the width of your tire, a 10.5 is only a tenth wider than the 265 you stated that came on it stock, however....a 205 width tires at 8.1 is 2.4 inches narrower and more CD friendly.
Another factor is the wt of that 31. The first 5 tires in that size from my suppliers come in at an average of 41.6 lbs each....the 265 size tire average wt is 38.2 lbs....not much difference, but some improvement can be had going back to that tire. I am still concerned that that tire did not come on it.
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42 time NHRA/IHRA drag race champ
05 SRT4-12.17@117 mph on DOTs-31.0 mpg-SOLD
96 Geo Metro-3 banger-60.1 mpg-SOLD
95 BMW M3-13.41 @ 106 mph-31mpg-SOLD
77 Chevy Monza with 350/350-FOR SALE
84 Horizon-1880 lbs-29 mpg
95 Neon-43 mpg
99 Z28-10.80 @ 127 mph-27.1mpg
2011 Prius-62.1 wife's
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