As usual, you drill down to the real answer.

Darn it’s boring when someone consistently posts short answers that are always correct.

But at least, PDX Racer’s pictures and advice provides info on this thread that hopefully puts the OP’s concerns to rest.

--Spike

 

I know. I'm not arguing with him. The picture is precisely what I thought it'd look like. Protruding, with curves that go much more inward at the bottom and top.

 

There is a reason why I created this thread, and it was to find out what drawbacks there could be to this before I did anything. And it's not like I'm asking a ludicrous question such as fitting a 305 in the rear on OEMs. Additionally, I am not a fan of 99% of the rim choices out there. Mostly everything out there ruins the flow of the Z, and I really love the OEM wheels.

Furthermore, I'm only looking for some additional rear traction, so I don't want to swap out all four rims, and get new tires all around - it's far too much money then I care to waste. And imo, spending an enormous amount of money on the one component of a car that gets abused the most is rather dumb. This is why I'm sticking to 18'' Axis Hiros as my spring/summer wheels. That and I'm a pound counter, especially when it comes down to rotated weight, so my wheel setup has to be lightweight.

If the width of the tire is a drastic safety issue, then I'd rather settle for the OEM sizes and that's it. Right now, I'm simply entertaining the thought and made this thread to gather some info.

 

I'm not understanding your statement.

Could you post a picture or graphic showing this? That would be helpful to at least the members like me who are old and have dense minds/moments.

--Spike

 

I posted soooo many times it's not even funny..
search next time...

 

Sorry... I don't see anything... I guess I missed your point.

Your pics show very little if anything.

--Spike

 

In the pic showing what a bulge would look like. It shows a ( shape, right? I was just describing what the shape is: a bulge that curves at both top and bottom unlike the other two shapes in the pic.

Hope that's clear. If not, it's okay. :P

rkd: Umm, you try searching for 265 or 275 in the search field. Thanks.

 

it will only make you slower.

 

I have no idea why he (rdk350z) suggests searching since his pictures and information are worthless to this discussion. I suspect he is simply parroting a robotic command.

His (rdk350z) first picture is taken close to the subject with the lens set to wide-angle. That picture with its poor composure and obvious distortion is pretty much worthless. The second picture shows the tire tread, and again is not useful to our discussion.

--Spike

 

Huh? whitt1 and I are talking about the same wheels, the ones that come stock on his nismo 350z. Notice he said stock Nismos, and how they are staggered in diameter. Notice his sig?

 

if u want to go 275 i would recommend 35 series thats what i currently have on the stock 06 wheels... it feels a lot better than the 40 series....will post pics soon...

 

You are correct. I stand corrected.

--Spike

 

Well, the stock tires that came on the '05 Track model -- 225/45R18F and 245/45R18R are really WAY too narrow. At those sizes, the fronts are stretched, and so are the rears.

Ideally, 245s are almost perfect on the fronts. 265s would be better on the rear than the 275s, but I have yet to find a 265/40, and 275s mount very easily on the 8.5-inch rims. I've run autocross practices on these-sized street tires, and they work fine (no rims touching the ground). The 245 DOT-R tires that I've used are scary, since sidewall deflection basically leaves the rims unprotected -- and less than an inch from the ground. I'd be more concerned about the outer edge of the tire pulling away from the bead than the inner edge popping off the wheel.

 

im running a 275.35.19 on my rear OEM G35 19", and couldnt be happier, youll love having the extra tire. everyone says dont do it, i say DO IT and be like me: happy.

*edit* heres a pic of mine:


front with a 245:



"bulge" on rears:



Looks pretty good IMO:



keep in mind these are horrid pictures and the "bulge" is at the bottom of the tire which makes it look bigger than it really is. These sizes are perfect for a 19x8 and 19x8.5

245/35/19F
275/35/19R

for youre 18"
245/35/18
265/30-35/18 (back tire might be a little tall looking for youre taste @ 35) 275 might be a LITTLE big, but the more rubber to the round the better!

too tall???:



one more, doesnt look like much bulging there...:


hope this helps, PM me with any more questions or if you want more pics.

 

i have 275 on these wheels.. i'll take pictures today when i get home

 

There is a direct relationship between proper wheel and tire size. Its about performance, handling and footprint during straight line acceleration and cornering.

But this forum is no longer about performance. Its about looks. Sad.

 

agreed. i really didn't know how to word it well. You did a good job.

I think most people who try and stick wider tires on wheels that aren't really necessary thinks it will make their wheels "look" wider or something. That's like me getting aftermarket wide wheels, sticking some 305 wide tires and wondering why my stock 350z car is so slow.

 

Agreed, but as you know, you and David are in not the norm here. It's a bunch of kids trying to rack up the most "mods" to impress other kids at car meets. How being a car enthusiast has changed.

 

G*ddamn...is this thread seriously going to turn into a flame war now? It was a simple frigin' question, which is precisely the whole point of this place: to ask questions and learn.

I sought advice before doing anything. So are you actually going to lump me, a 23 year old, into the "kids" category now? My friend, you aren't much older than I am, if that's the case.

 

More likely it is the "rules enforcers" who are saying that the recommendation from the tire manufacturers about width is a requirement -- it isn't.

275s are fine on an 8.5" wheel. Everyone who has done them has had zero problems due to the width of the tire, and since I, personally, am more about performance than appearance. I (and others) have documented data showing that the 245/275 combination provides significantly better traction than the stock 225/245 tire combination in dry conditions.