Actually plugging the numbers into the sizing calculator you have over 3% difference between front and back diameters, so you may run into traction control problems
http://www.1010tires.com/tiresizecalculator.asp

 

i checked tirerack and saw so many different models of the RE050A.. is it just the RE050A or more specific? i.e II RFT, Pole Position , Pole Position RFT, RFT, Scuderia???

 

Monkey, you woke up a pretty old thread. There are others more useful, try a search. They aren't runflats, are you serious? They are RE050A, with load ratings of 95W front, and 96W rear. Many people have moved up to 235/50 and 255/45 with great results. Just know that your load rating will go up with a bigger tire, so the ride might be incrementally stiffer. If I was staying with the Bridgestones, or needed all-season tires (Goodyear Eagle F1 All-Season), I'd love to try 225/50 and 275/40, as they are only 1% different in revs/mile.

 

So I just got the g37 sport wheels on my 08 Journey Sedan - I assume I won't need to rotate tires? I'm a noob to all of this stuff!

 

From Page 8-38 of the G35 Manual

Tire rotation (Models equipped with
different size tires on front and rear)
Tires cannot be rotated on this vehicle,
as front tires are a different size from
rear tires and the direction of the wheel
rotation is fixed for each tire.
A pin is on the front brake rotor to
prevent the rear wheels from being installed
in place of the front wheels. The
spare tire can be installed in place of the
front and rear wheels. When installing
the spare tire in the front wheel, the hole
in the spare tire wheel must be aligned
with the pin on the brake rotor.

 

Does anyone know what same size will fit on all 4 wheels? will the 225/45/18 fit in the rear too? or vice versa.. (245/45/18 in the front).

BTW... Anyone selling some used tires??? i need some badly...

 

If you want to stay with the OEM sizes, either 225/50 or 245/45, all 18s.

225/45 is a tad short.