Nismo recommends one thing but i need a tire size for a 350z

[BackIntoAnS13]

Sup fellas, I have a 03 350z and im gonna be getting the 5Zigen Pro Racer GN+'s here in December and im gonna be running 18x9.5 +22 all the way around so my question is..... what tire size should i run. Nismo recommends a 245/40/18 on a 18x8.5 in the front and a 275/40/18 on 18x9.5 rear. Well i wanted to get the falken RT-615's but the problem is they dont have a 275/40/18. They have the 245/40/18 for the fronts. But as far as the rear goes the next option of sizes is either a 255/40/18 or 295/40/18. they do have a 275/35/18. Would that be ok to run.... 245/40/18 front and 275/35/18 rear. Now again this is what Nismo recommends but if yall have any other input i would appreciate it. Thank guys.

PS I use the car for daily driving and track day every month if that info is needed.

[gumby74]

The 245/40 18 checks in at about 25.6" in diameter, the 275/35 18 checks in at about 25.7" in diameter. Thats close enough to being identical.The 245 will have a slight stretch on a 9.5" wheel and the 275 will be squared to maybe a slight bulge on the 9.5" wheel. Don't know what else to say.Godspeed.

[nismofly]

the tire sizes they give are staggered because the wheel sizes are staggered, you want the same size all around...im not sure what kind of tire can fit up front on a z33 with that size and offset so i dont know if the 275/35 will work, the 255/40 im sure would

[BackIntoAnS13]

so 255/40 all the way around would be ok then???

[ddgsxr504]

http://www.1010tires.com/TireSizeCalculator.asp