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I say stick the largest size you can on there and hand calculate your MPGs.
Figure out the difference in tire size percentage wise and when you fill up add athat precentage to your tank miles.
I have to do that with my suburban.
Plus you dont want close, a 3% difference is close. Add the difference to your milage even if its 1 or 2 percent. The slightly larger tire is likely to throw off the odometer reading by at least 2 or 3 percent and that could easily make a 1 mpg difference.
Shop around. When we put bigger ascends on the hyundai they were $9 per tire cheaper than the OE size ascend, That made the larger ascends the same price as the cheapest smaller OEM size tire.
$36, thats most of a tank of gas right there.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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