larger tires will they fit

How are you calculating that and against what tire size are you comparing?

I don't think you can get closer than the stock sizes on the car...

Check out my list of mods your answer is there

What >>>>?

To calculate i found a nice stretch of flat highway and set my cruise to 60(according to the speedometer) then i time myself (multiple times for acuracy) on how long i travel from mile marker to mile marker (if you watch your ODO it won't work because it'll be just as off as your speedo).
for me i traveled a mile in 1:02.32 (when it should be exactly 1:00min)
so that is 3.866% slower than actual speedo reading, so to compensate i need a tire with approx 3.866% larger circumferance (215/50/17s are 3.4% larger in circumferance)

Here look at my pics J Rodriguez | My Mobile Photos Photo Album on Myspace

thanks crock! for the PMs too!

Anyone know what the legal tolerances are for speedos being off? For some reason I remember 5% over is okay? I believe anything under is not legal.

Not to say that wanting to fix it is wrong, but my impression was the majority of vehicles have some fluctuation in the speedo readings.