Originally Posted by TPrelude-370z

Hey guys,

I'm looking to grab bigger rear tires on the 2015 stock 18's oem tires.
.
Here is the plan:

Move stock rears to the front and buy x2 g-Force COMP-2 A/S 275/40/18's for the rear (need all season to finish up the last couple months left of winter here). The only other options for that tire is 255/45/18. They seem to get great reviews even in light snow.

My questions:

Will I get better grip with the wider rear tires? Especially on cold streets.
Will the driving/handling be drastically affected?
Will this look good on stock suspension (fitment/fender gap/bubble)?
When I get swift spec R springs, will these tires still fit all the way around?
Can I still add spacers with that set up (including springs) without rubbing?

Also, if you have better options as well as spacer specs, feel free to chime in.

Thanks guys.

P.S. I think I posted this in the wrong place before, so my apologies for the double post.