It's 10% of 205mm (the tread width) taller but you're right, it's a 6.5% increase in diameter. They're 1.61" taller than stock in diameter.
Comparitively, a 235/40/17 is 1.48" shorter than stock in diameter.
Assuming they're going on a stock 2.5 TS they should fit fine, but they'll make the gears seem taller (which puts a touch more stress on them, but I doubt that's an issue with a TS). This could lead to better gas milage on the freeway and a smoother feeling ride at the expense of handling.
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Slow and low, that is the tempo.
Last edited by cody; 2009-05-07 at 02:56 PM.
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