370z MEATY TIRE THREAD

[BoneZ]

Originally Posted by VinceThe1

Might as well go with the 275/40R18s to replace your original 245/45R18 size. They are the perfect size since they are within 0.1% of your original overall diameter.

You can also move your rear 245/45R18s to the front to replace your 225/50R18s. That's what I would suggest in order to make a meatier setup that matches the Sport package.

Why did you think you had to widen your wheels in order to install not much wider tires on them? There's many, many reasons I wouldn't recommend widening wheels...mainly safety, but other than that it also changes your offset to a more positive one (higher number) and it ruins your wheels and wastes your money.

I'm not sure. I read incorrect specs I reckon. I went back and checked. I see 245 is good on an 8" rim and a 275 recommends 9.5" (close enough). So it's all good.

[VinceThe1]

Originally Posted by BoneZ

I'm not sure. I read incorrect specs I reckon. I went back and checked. I see 245 is good on an 8" rim and a 275 recommends 9.5" (close enough). So it's all good.

Yea a 275 is a little meaty for a 9" wheel but it's nothing crazy.

[jchammond]

Originally Posted by BoneZ

I'm not sure. I read incorrect specs I reckon. I went back and checked. I see 245 is good on an 8" rim and a 275 recommends 9.5" (close enough). So it's all good.

remmber-8"wide rim is 9"wide & 9" rim is 10" wide-(lip to lip) look at my tires;front's have 8.6"tread & rear's have 9.8" tread....still room for a bit wider.

[BoneZ]

Originally Posted by jchammond

remmber-8"wide rim is 9"wide & 9" rim is 10" wide-(lip to lip) look at my tires;front's have 8.6"tread & rear's have 9.8" tread....still room for a bit wider.

I like your. I'll be doing this... unless the 19's get here before I need tires.

[VinceThe1]

Originally Posted by jchammond

remmber-8"wide rim is 9"wide & 9" rim is 10" wide-(lip to lip) look at my tires;front's have 8.6"tread & rear's have 9.8" tread....still room for a bit wider.

Then again tires are so different in width specs and aspect ratios from one manufacturer to another that it's always a guessing game. I have a friend with a BMW that had 295/30R19 Falkens in the rear and was rubbing. He later changed them with Pirelli 285/30R19s in hope of solving the rubbing issue (because they should be both slightly narrower and slightly smaller in overall diameter) only to find out they're actually a little bigger and rub even worse...so imagine how surprised we were when they were supposed to be actually smaller.

I have seen examples of this many, many times. Two tires from two different manufacturers with the same exact sizes on them, and they are sometimes not only slightly different, but VISIBLY different.

[Rusty]

Originally Posted by jchammond

remmber-8"wide rim is 9"wide & 9" rim is 10" wide-(lip to lip) look at my tires;front's have 8.6"tread & rear's have 9.8" tread....still room for a bit wider.

Thought they measured rims from inside of the lip to inside the lip? That's how my Forgelines are measured.

[jchammond]

Originally Posted by Rusty

Thought they measured rims from inside of the lip to inside the lip? That's how my Forgelines are measured.

they do (bead to bead) is width measurement spec./but overall lip to lip spec,is about 1/2" on each side-making them an inch wider.
your 19x12's are actually 13" wide overall-that's why the tread on your 345's match the overall width @ 13"