Wheels questions Pls help

[MikeMayer6]

Hey everyone. I have a 2015 Base gt. Currently it has the stock 18x8 5 spoke with a 40 mm offset and running 235’s on all 4 corners

I have been wanting to put a set of staggered FR500s on this thing for a while now. The desired wheel and tire sizes are
20x8.5 +30mm offset with 245/40/r20
In the front and
20x10 +45mm offset with 295/40/r20

I’ve been on a few wheel and tire calculators and don’t really know what any of the numbers mean. my questions are
Will there be clearance issues?
Speedometer thrown off?
Will any of this cause issues with my traction Control?

If so what tire size tires you recommend for these wheels?

also I plan using lowering springs to close up any wheel gap after the wheels and tires go on

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[MikeMayer6]

Any answers and help are greatly appreciated. Thanks in advance

 

[Little Guy]

You will not have a fitment issue however, your speedometer will change. You may want to consider going with 285/35 in the rear. That should limit the speedometer change and , to me, be more aesthetically pleasing.

 

[TuxedoPC]

I agree with little guy, also nothing wrong with going to the Performance Pack 1 Wheels, they are strong, come with really good tires and can be picked up on the fourm all the time for cheaper than buying those wheels, mounting, balance, buying tires. It is a very noticeable upgrade.

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